Pivotrol Pump Featuring Reliable PowerPivot Technology

Pivotrol Pump Featuring Reliable PowerPivot Technology
INSTALLATION AND MAINTENANCE INSTRUCTIONS
IM-5-201-US
February 2016
THE PIVOTROL PUMP® (Patented)
Featuring Reliable PowerPivot® Technology
PTC
PTF-HP
PTF
PTF4
1
Table of Contents
1.0 Safety Information.................................................................................................................. 3
2.0 General Product Information.................................................................................................. 5
3.0 Installation.............................................................................................................................. 7
4.0 Start-Up Procedure.............................................................................................................. 13
5.0 Maintenance......................................................................................................................... 13
6.0 Other Hook-Up Sketches..................................................................................................... 15
7.0 Troubleshooting................................................................................................................... 16
8.0 Declarations of Conformity (PED)......................................................................................... 19
2
1.0 Safety Information
1.3Lighting
Safe operation of these products can be guaranteed only if they are
properly installed, commissioned, used and maintained by qualified
personnel (see section 1.11) in compliance with the operating
instructions. General installation and safety instructions for pipeline
and plant construction, as well as the proper use of tools and safety
equipment, must also be compiled with.
Ensure adequate lighting, particularly where detailed or intricate
work is required.
1.1 Intended Use
1.5 Hazardous environment around the product
1.4 Hazardous liquids or gases in the pipeline
Consider what is in the pipeline or what may have been in the pipeline
at some previous time. Consider: flammable materials, substances
hazardous to health, extremes of temperature.
Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits),
dangerous gases, extremes of temperature, hot surfaces, fire hazard
(e.g. during welding), excessive noise, moving machinery.
Referring to the Installation and Maintenance Instructions, nameplate, and Technical Information sheet, check that the product is
suitable for the intended use / application.
1.6 The system
i) The product has been specifically designed for use on steam
or water/condensate. The products’ use on other fluids may be
possible but, if this is contemplated, Spirax Sarco, Inc. should
be contacted to confirm suitability for the application being
considered.
Consider the effect on the complete system of the work proposed.
Will any proposed action (e.g. closing isolation valves, electrical
isolation) put any other part of the system or any personnel at risk?
Dangers might include isolation of vents or protective devices or
the rendering ineffective of controls or alarms. Ensure isolation
valves are turned on and off in a gradual way to avoid system shocks.
ii) For design compliance see chart below. When specifying
and ordering a Pivotrol Pump, ensure the correct compliance
approval options have been selected.
1.7 Pressure systems
Ensure that any pressure is isolated and safely vented to atmospheric
pressure. Consider double isolation (double block and bleed) and
the locking or labelling of closed valves. Do not assume that the
system has depressurised even when the pressure gauge indicates
zero.
Regulatory Compliance Options
PTC Range
PTF Range
X
X
Allow time for temperature to normalise after isolation to avoid
danger of burns.
X
1.9 Tools and consumables
Designed in accordance with
ASME VIII, Div. 1
ASME code stamped to
ASME VIII, Div. 1
PED
CE
X
1.8Temperature
Before starting work ensure that you have suitable tools and / or
consumables available. Use only genuine Spirax Sarco replacement
parts.
X
iii) The product complies with the requirements of the Pressure
Equipment Directive, 97/23/EC and carries the CE mark when so
required. See chart below for further details.
1.10 Protective clothing
Consider whether you and / or others in the vicinity require any
protective clothing to protect against the hazards of, for example,
chemicals, high / low temperature, radiation, noise, falling objects,
and dangers to eyes and face.
Group 2 Gases
Product
PED Category
Ductile Iron
Steel
Stainless Steel
PTC Range
II
n/a
n/a
PTF Range
n/a
III
III
1.11 Permits to work
All work must be carried out or be supervised by a suitably competent
person. Installation and operating personnel should be trained in
the correct use of the product according to the Installation and
Maintenance Instructions.
iv) Check material suitability, pressure and temperature and their
maximum and minimum values. If the maximum operating limits
of the product are lower than those of the system in which it
is being fitted, or if malfunction of the product could result in
a dangerous over pressure or over temperature occurrence,
ensure a safety device is included in the system to prevent such
over-limit situations.
Where a formal ‘permit to work’ system is in force it must be complied
with. Where there is no such system, it is recommended that a
responsible person should know what work is going on and, where
necessary, arrange to have an assistant whose primary responsibility
is safety.
v) Determine the correct installation situation and direction of
fluid flow.
Manual handling of large and/or heavy products may present a risk
of injury. Lifting, pushing, pulling, carrying or supporting a load by
bodily force can cause injury particularly to the back. You are advised
to assess the risks taking into account the task, the individual, the
load and the working environment and use the appropriate handling
method depending on the circumstances of the work being done.
Post ‘warning notices’ if necessary.
1.12Handling
vi) Spirax Sarco, Inc. products are not intended to withstand
external stresses, including pipe stresses, which may be induced
by any system to which they are installed. It is the responsibility
of the installer to consider these stresses and take adequate
precautions to minimize them.
1.13 Residual hazards
In normal use the external surface of the product may be very hot.
If used at the maximum permitted operating conditions the surface
temperature of some products may reach temperatures in excess
of 300°C (572°F).
vii) Remove all protective covers from all connections before installation.
Many products are not self-draining. Take due care when dismantling
or removing the product from an installation (refer to ‘Maintenance
instructions’).
1.2 Access
Ensure safe access and if necessary a safe working platform (suitably
guarded) before attempting to work on the product. Arrange suitable
lifting gear if required.
3
1.14Freezing
Steam Mains - Do's and Dont's:
Provision must be made to protect products which
are not self-draining against frost damage in
environments where they may be exposed to
temperatures below freezing point.
1.15Disposal
4
7
4
7
4
7
4
7
4
7
Unless otherwise stated in the Installation and
Maintenance Instructions, this product is recyclable
and no ecological hazard is anticipated with its
disposal providing due care is taken.
1.16 Returning products
Customers and stockists are reminded that under
EC Health, Safety and Environment Law, when
returning products to Spirax Sarco they must provide
information on any hazards and the precautions to
be taken due to contamination residues or
mechanical damage which may present a health,
safety or environmental risk. This information must
be provided in writing including Health and Safety
data sheets relating to any substances identified
as hazardous or potentially hazardous.
Steam
1.17 Working safely with cast iron
products on steam
Cast iron products are commonly found on steam
and condensate systems. If installed correctly using
good steam engineering practices, it is perfectly
safe. However, because of its mechanical properties,
it is less forgiving compared to other materials such
as SG iron or carbon steel. The following are the good
en gin e e r ing p r ac t ic e s r equir e d to p r event
waterhammer and ensure safe working conditions
on a steam system.
Safe Handling
Cast Iron is a brittle
material. If the product
is dropped during
installation and there
is any risk of damage
the product should
not be used unless it
is fully inspected and
pressure tested by the
manufacturer.
Prevention of tensile stressing
Pipe misalignment:
Installing products or re-assembling after maintenance:
7
1
7
3
Prevention of water hammer
1
3
5
6
4
Steam trapping on steam mains:
4
Do not over tighten.
Use correct torque figures.
4
2
2
8
Flange bolts should be gradually tightened across
diameters to ensure even load and alignment.
Thermal expansion:
Guides
Limit rods
Guides
Medium
distance
Axial movement
Short
distance
Small
lateral
movement
Large
lateral
movement
Fixing point
Fixing point
Limit rods
Axial movement
Guides
Guides
Large
lateral
movement
Small
lateral
movement
2.0 General Product Information
2.5 Limiting Operating Conditions
2.1 Description
The Pivotrol Pump® (patented) is a non electric pump which transfers high
temperature condensate, or other liquids from a low point, low pressure
or vacuum space to an area of higher pressure or elevation. This selfcontained unit including PowerPivot® technology (patented) uses steam,
compressed air or any other suitable pressurized gas as the pumping
(motive) force.
Product
PMO
PMA
PTC
PTC T-Bone
PTF
200 psig @ 400°F
200 psig
PTF T-Bone
PTF Top
PTF-HTF
200 psig @ 750°F
PTF-HP
300 psig
300 psig @ 650°F
PTF-HP*
300 psig
300 psig @ 650°F
PTF4
200 psig
200 psig @ 400°F
* When fitted with Reflex Gauge Glass
2.2 Options
•
•
Digital Cycle counter with auxiliary output.
Specific Gravity Options include: 0.65—0.79, 0.80—0.89, 0.9—1.0
Note: PTF4 and PTF-HP only offered with specific gravity option of
0.88—1.0
iii) PTF-HTF pumps are not supplied with check valves but require
two. Spirax Sarco recommends the Velan Model F00-1114C-02AA
ANSI 300 RF Flanged cast steel swing type check valve. Capacities
in TI-5-030-US for the PTF-HTF were achieved using these check
valves.
2.4 Sizes and Connections
Inlet /
Outlet Size
PTC
3x2
2x2
PTC
T-Bone
3x3
PTF
3x2
2x2
PTF
T-Bone
PTF Top
PTF-HTF
PTF-HP
3x3
3x2
3x2
PTF4
4x4
750°F @ 200 psig
650°F @ 300 psig
600°F @ 300 psig
650°F @ 125 psig
ii) For complete sizing and selecting data, including capacities, see
TI-5-030-US
Gauge glass
Reflex type gauge glass
Insulation cover
Product
650°F @ 125 psig
i) Max number of cycles per minute = 6
2.3 Accessories
•
•
•
TMA
Inlet /
Outlet
Flange
Flange
Rating*
Motive /
Exhaust
iv) See Techncial Information sheet for design conditions.
ANSI 150
NPT
ANSI 150 or
ANSI 300
NPT or SW
NPT or SW
3x3
RF
NPT or SW
ANSI 300
ANSI 150 or
ANSI 300
SW
NPT or SW
*Limited to pressure rating of pump.
5
2.6 Filling Head Requirements
Product
Standard Recommended
Max Filling Head
Min Filling Head
With Reduced Capacity
PTC
PTC T-Bone
PTF
PTF T-Bone
PTF Top
PTF-HTF
PTF-HP
PTF4
PTC
PTC T-Bone
PTF
PTF T-Bone
PTF Top
PTF-HTF
PTF-HP
PTF4
PTC 2x2
PTC 3x2
PTC T-Bone
PTF 2 x2
PTF 3x2
PTF T-Bone
PTF Top
PTF-HTF
PTF-HP
PTF4
Filling Head
Above Pump Cover
12”
12”
12”
12”
23”
12”
12”
12”
48”
48”
48”
48”
48”
48”
60”
60”
-3”
-1”
-1”
-3”
-1”
-1”
10”
1”
0”
-3”
Filling Height
From Base of Pump
36.9”
36.9”
44.1”
44.1”
54.9”
44.1”
42.8”
44.3”
72.9”
72.9”
80.1”
80.1”
80.1”
80.1”
90.8”
29.3”
21.9”
23.9”
23.9”
29.1”
31.1”
31.1”
41.9”
31.1”
30.8”
29.3”
1" NPT
Exhaust
Outlet
23
2.7 How the Pivotrol Pump® Operates
1. In the normal position before start up the float (18) is at its lowest
position with the steam inlet valve (4) is closed, the exhaust valve (6)
is open.
2
1/2" NPT
Motive
Pressure
Inlet
3
1
2. When liquid flows, by gravity, through the inlet check valve (21) in to
the pump body, the float (18) will become buoyant and rise.
10
11
12
13
14
15
Outlet 18
3. As the float (18) continues to rise the float arm assembly (14) is
engaged which increases the compression in the spring (13). When
the float (18) has risen to its upper tripping position the energy in the
spring is released instantaneously causing the float arm assembly
(14) to snap upwards over center moving the push rod (9) upwards to
simultaneously open the steam inlet valve (4) and close the exhaust
valve (6).
16
17
Check Valve
Inlet
Check Valve
(22)
(21)
Liquid
Outlet
4. Steam will now flow through the steam inlet valve (4) and develop a
pressure within the body forcing the liquid out through the discharge
check valve (22). The inlet check valve (21) will be closed during the
discharge cycle.
Liquid
Inlet
20
Figure 1 Product Overview
5. As the liquid level in the pump body lowers so does the float’s (18)
position. Before the float (18) reaches its lowest position the float
arm assembly (14) is engaged increasing the compression in the
spring (13). When the float (18) is at its lower tripping position in
the body the energy in the spring (13) is released instantaneously
causing the float arm assembly (14) to snap over center downward
moving the push rod (9) down causing the steam inlet valve (4) to
close and exhaust valve (6) to open simultaneously.
7
1/2" Drain
Connection
Exhaust
Outlet
Motive
Pressure
Inlet
5
6
6. Liquid will again flow through the inlet check valve (21) to fill the
pump body and the cycle will be repeated.
8
4
9
19
Figure 2 Motive / Exhaust Valve
6
3.0 Installation
Caution—Before installation or any maintenance is performed, ensure that all condensate, steam, air or gas lines are closed to prevent personal
injury. Proper lock-out / tag-out procedures must be followed. Ensure all pressurized lines are dissipated and cooled before starting work.
3.1 Upgrading mechanism
When upgrading the mechanism from the old PPC/PPF style to the new Pivotrol® mechanism, it is necessary to replace the cover bolts. Also take caution
when upgrading such that the mechanism does not get damaged as the pivots may become dislodged. See below.
CAUTION
DO NOT KNOCK THE
MECHANISM AGAINST THE
BODY OR SIMILARLY HARD
OBJECTS AS THIS MAY
DISLODGE THE PIVOTS AND
CAN PERMANENTLY AFFECT
THE PUMPS PERFORMANCE.
Pivotrol PTC/PTF cover
bolts rated to 200 psig
PPC/PPF cover
bolts rated to
125 psig
CAUTION
If upgrading pump from
125 psig to 200 psig
you must upgrade bolts
to grade B7, Stock
#73181 as shown
3.2 Open (vented) systems suitable for ASME and
PED compliant pumps only
point, is more than 6 ft. A general “rule of thumb” (based on a 6 ft. pipe
run and a head of 2 ft.):
• Condensate loads from zero to 11000 lb. /hr. use 1½”
• Condensate loads from 11000 to 22000 lb. /hr. use 2”
• Condensate loads from 22000 to 39600 lb. /hr. use 3”
In an open system, flash steam must be vented or condensed ahead of
pump inlet. Application details will dictate which of the following options
will be necessary to accomplish this.
The over-flow must be fitted with a “loop seal” arrangement or a suitably
sized float trap (preferred), to prevent steam escaping via the over-flow
connection.
The condensate receiver must have an adequately sized over-flow
connection and vent pipe. Discharge from both the over-flow and vent
pipe(s) MUST be piped to a safe location, such that there is no risk to
personnel. In the event of pump or system malfunction or overload, very
hot condensate may be discharged from the over-flow, or the vent pipe,
or both. Where the vent pipe is not piped to a pit, or similar safe location,
the use of a vent head to reduce the chance of entrained hot condensate
spraying out of the vent is recommended.
Vented Receivers
To drain condensate from single or multiple sources in an open system,
a vented receiver should be installed in a horizontal plane ahead of the
pump. Sufficient volume is needed above the filling head level to accept
the condensate reaching the receiver during the pump discharge stroke.
More importantly, the receiver must be sized to allow sufficient area for
complete flash steam separation from the condensate. By sizing the
receiver appropriately, there will be sufficient volume for condensate
storage and sufficient area for flash steam separation. The receiver can
be a length of large diameter pipe or a tank. A receiver overflow piping
should be installed as shown in Figures 3 or 4 and piped to a suitable
drain. The piping must form a loop type water seal at least 12” deep
immediately after the receiver.
Over-flow Connection — Over-flow piping must be used on a vented
system. Over-flow connections are required to ensure that in the event of
pump or system malfunction, condensate will run in a controlled manner,
from the condensate receiver to a safe location, such as a drain (subject to
temperature and local regulations) or to an alternative safe location. The
over-flow piping can be a ’U’ bend water seal which has a 12” minimum
depth. The preferred over-flow would use a float and thermostatic steam
trap sized to handle full load of the pump system. The trap, unlike the
“U” bend, will prevent any steam from flowing out of the over-flow pipe
should the tank become slightly pressurized and is the preferred method.
Note: To achieve rated capacity and maintain the pumps warranty,
each pump must be installed with the check valves as supplied by
Spirax Sarco Inc, except at the inlet on a sump pit application as
shown in Figure 13.
Piping for the trap would be to direct flow from the over-flow connection
and elbow directly down to the lowest point that the trap can fit and still
drain by gravity. The “U” bend must be primed before starting the system
to ensure no vapor escapes. The addition of the over-flow provides a
safety mechanism ensuring the pressure within the receiver does not
increase. The over-flow is also a tool to diagnose system problems. In
the event of the over-flow spilling fluid the operator is immediately made
aware of a system problem. This could include failed traps feeding the
package failed pump and changes in system loads and overloaded
receiver.
Installation Procedure:
1. Install the pump physically below the receiver to be drained with the
exhaust connection vertically upwards. Pump should be installed
with the recommended filling head (the vertical distance between
the top of the pump and the bottom of the receiver) as shown in
Figures 3 or 4. For other filling head variations, see the capacity table on
TI-5-030- US.
2. To prevent equipment flooding during the pump discharge stroke, a
vented receiver should be installed in a horizontal plane ahead of the
pump as shown in Figures 3 or 4. All inlet line fittings must be fully
ported.
Pump or system malfunction which could cause the receiver to overflow, can occur for many reasons. These include, loss of motive gas
due to blockage or incorrect operation, mechanical failure of the pump
mechanism or associated check valves, blockage of the condensate inlet
strainer or closure of the pumped return line and system shutdowns.
3. Connect the vented receiver to the inlet check valve on the pump.
Connect the discharge to the return main or other installation point.
For best performance, horizontal runs immediately ahead of the inlet
check valve should be kept to a minimum. Connect the discharge to
the return main or other installation point. Where the return line rises to
Over-flows will normally be a minimum of 1 1/2 “ in diameter, but may
need to be larger for high capacity units such as packaged PTF4, or
where the length of over-flow pipe run, between receiver and discharge
7
a high level directly after leaving the pump a second check valve should be fitted at the highest point, either in the horizontal or vertical run, to prevent
water from falling back on the outlet check valve of the pump and reducing its service life. This prevents water-hammer in the condensate return line.
4. Connect the operating medium (motive gas) to the motive inlet in the cover. Supply main should have a strainer and steam trap (steam service) or drain
trap (air or gas service) installed upstream of the supply inlet. The steam discharge should be piped into the receiver. Drain Trap on air service should
be piped to drain. For increased service life, operate the pump with motive pressures between 15 to 20 psig above the pump back pressure, while
ensuring the maximum required pump capacity is still achieved.
Note: When available operating medium pressure exceeds 200 psig, a Spirax Sarco pressure reducing valve (PRV) is required to reduce pressure
to the pump. The PRV should be located as far from the pump as possible. For best operation, motive pressure should be reduced to the minimum
required to overcome pump back pressure and achieve the desired capacity. A safety relief valve should be installed at the connection provided in the
motive supply piping.
5. Any horizontal runs in the exhaust line should be pitched so that the line is self-draining. The exhaust line should be piped, unrestricted, to atmosphere
as shown in Figures 3 or 4.
Check valve to help
reduce likelihood of
backflow and waterhammer.
Operating Steam
or Gas Supply
Vent to atmosphere. Vent to be piped to a
safe location such that there is no risk to
personnel. Vent head recommeded if vent
not piped to a pit or similar location.
Condensate
Return
Line
Condensate
Pump
Exhaust
Vented
Receiver
H
Height
Filling
Head
At least
12” Seal
on overflow. Discharge to
be piped to safe location
such that there is no risk
to personnel. A Float &
Thermostatic Trap can be
used in lieu of syphons loop
consults. Factor for trap
size. Trap is preferred.
Inlet
Strainer
Filling
Height
12”
Preferred
6” Min.
Pivotrol®
Pump
* Liquid Drain Trap Type
FA-150 for motive air
TD 42L or 52L Trap
When steam supply
is used
** A Check Valve should be
placed on motive inlet when
compressed air is used.
Figure 3
Check Valve
Vent to atmosphere. Vent to be piped to a safe location such
that there is no risk to personnel. Vent head recommeded if
vent not piped to a pit or similar location.
Vent
to
atmosphere
Condensate
Inlet
Check valve to help
reduce likelihood of
backflow and waterhammer.
Motive Steam
or Gas Supply
Pump
Exhaust
Condensate
Return
Line
Height
Vented
Receiver
At least
12"
Seal
on
overflow
At least
12” Seal
on overflow. Discharge to
Filling
be piped to safe location
such that there is no risk to Height
personnel.
Figure 4
Strainer
Filling
Head
Min 12"
above
vent assist
valve
TD
Strainer
PTF4
8
3.3 Closed (non-vented) systems suitable for ASME and PED compliant pumps only
A closed-loop installation is one in which the exhaust line of the pump is piped back (pressure equalized) to the reservoir or equipment being drained.
Installation Procedure:
1. Install the pump physically below the equipment being drained with
the exhaust connection vertically upwards. Pump should be installed
with the recommended filling head (the vertical distance between
the top of the pump and the bottom of the reservoir) as shown in
Figures 5 or 6. For other filling head variations, see Capacity Table on
TI-5-030-US.
service) or drain trap (air or gas service) installed upstream of the
supply inlet. The steam / drain trap discharge should be piped into
the receiver. For increased service life, operate the pump with motive
pressures between 15 to 20 psig above the pump back pressure, while
ensuring the maximum required pump capacity is still achieved.
Note: When available operating medium pressure exceeds 200 psig,
a Spirax Sarco pressure reducing valve (PRV) is required to reduce
pressure to the pump. The PRV should be located as far from the
pump as possible. For best operation, motive pressure should be
reduced to the minimum required to overcome backpressure and
achieve desired capacity. A safety relief valve must be installed to
prevent over pressurizing the mechanism / pump / system.
2. To prevent equipment flooding during the pump discharge stroke,
a reservoir should be installed in a horizontal plane ahead of the
pump as shown in Figures 5 or 6. For proper reservoir sizing, refer to
TI-5-030-US. All inlet line fittings must be fully ported. If desired,
overflow piping can be installed using a properly sized float and
thermostaicc trap. The trap inlet should be located at the maximum
allowable water level, at or near the top of the reservoir, and it should
discharge to a suitable drain.
5. Exhaust line must be piped, unrestricted, to the top of the reservoir
in order to equalize all pressures and ensure condensate drains by
gravity. On vacuum systems the exhaust line may be connected to the
steam space being drained. A thermostatic air vent should be installed
at the highest point of the exhaust line to vent all non-condensable
gases during start-up. Any horizontal runs in the exhaust line should
be pitched so that the line is self-draining.
3. For best performance, horizontal piping runs immediately ahead of the
inlet check valve should be kept to a minimum. Connect the discharge
to the return main or other installation point. Where the return line rises
to a high level directly after leaving the pump a second check valve
should be fitted at the highest point, either in the horizontal or vertical
run, to prevent water from falling back on the outlet check valve of the
pump and reducing its service life. This prevents water-hammer in the
condensate return line.
6. If at any time the backpressure against the pump is less than the
pressure in the equipment being drained, a properly sized float and
thermostatic trap must be installed between the pump and discharge
check valve as shown in Figure 6. Consult Spirax Sarco for trap sizing.
4. Connect the operating medium (motive gas) to the motive inlet in the
cover. Supply main should have a strainer and steam trap (steam
Inlet Reservoir Piping
To drain condensate from a single piece of equipment in a closed system, a reservoir should be installed in a horizontal plane ahead of the pump.
Sufficient reservoir volume is needed above the filling head level to accept condensate reaching the pump during the discharge stroke. See TI-5-030-US
for minimum reservoir sizing, based on condensate load, needed to prevent equipment flooding during the pump discharge stroke.
P1
Return Line
Balanced
Pressure
Thermostatic
Air Vent
Pilot Operated
Temperature
Control Valve
1/2” HP Steam
Supply
Heat Exchanger
Reservoir
Filling
Head
Spira-tec
Steam Trap
Loss Detector
Pivotrol®
Pump
Draining L.P. Heat Exchanger to
Overhead Return. Pressure at PP
Pump outlet P2 exceeds pressure of
supply to Heat Exchanger P1.
Figure 5
9
P2
Thermo-Dynamic®
Trap
P1
Balanced
Pressure
Thermostatic
Air Vent
Steam
Supply
Wye Strainer
Pilot Operated
Temperature Control Valve
Flow
Temperature
Control Sensor
Centrifugal
Pump
Reservoir Pipe
Steam
Supply
Draining L.P. Heat Exchanger to
Overhead Return. Pressure at PP Pump
outlet P2 does not exceed pressure of
supply to Heat Exchanger P1.
Pivotrol®
Pump
Return
Heater
P2
Figure 6
Float & Thermostatic
Steam Trap
Closed System Considerations for PTF4
The pump will not satisfactorily operate below a motive pressure of
30 psig.
When the PTF4 is placed in a Closed System the exhaust line from the
exhaust valve must be piped into the exhaust line from the Vent Assist
Valve. To ensure no back pressure is placed on the Vent Assist Valve the
exhaust line from the exhaust valve must be tied in at least 12 inches
above the Vent Assist Valve. See Figure 7 below.
The steam inlet pipework must allow for an equal quantity of steam to be
fed into each of the two mechanisms. For this to happen the steam inlet
pipework must be of equal pipe size and length when split into two lines
from the main steam inlet pipework. For the customer’s convenience
and to ensure correct steam inlet hook-up the option has been made
available to purchase an inlet piping assembly.
To size the PTF4 in a closed system:
• Establish available motive pressure. Establish static back pressure
on Pump.
• Place established pressures in formulae below:
• Pump Motive Pressure (psig) – min. VAV delta P (psig) > Back
Pressure (psig)
• Capacity charts to be read as normal, i.e. at pump motive and back
pressure.
• If, Pump Motive Pressure (psig) – min. VAV delta P (psig) < Back
Pressure (psig), then isolate or remove VAV and multiply capacity by
0.77 to find reduced capacity without VAV.
At a minimum, the inlet piping should be at least 2” pipe from the supply
header dropping to the pump. Only when the motive inlet pipework is
close to 2 ft to the pump should the motive line piping be reduced and split
equally into two separate lines. These should be of equal diameter and
length to be fed into each mechanism’s motive inlet. This will ensure the
motive gas is supplied uniformly to each of the PTF4 pump mechanisms
and will provide synchronous operation of both mechanisms.
Thermostatic
air vent
check valve
VAV = Vent Assist Valve
Alternate vent assist
valve pipe hookup
Condensate
inlet
Exhaust valve
pipe
Vent
assist valve
exhaust pipe
RESERVOIR
12” Min
12” Min
PTF4
Condensate
return
Figure 7
Typical PTF4 exhaust and vent assist valve
pipe hookup for closed system.
10
3.4 Closed (non-vented) systems suitable for low specific gravity and volatile fluid application with ASME
compliant pump
The Pivotrol® Pump is not ATEX approved and hence is not suitable for use in such applications in the
European Community.
SPECIAL SAFETY NOTE: When using the PTF4 to pump hazardous
fluids and/or in hazardous locations it is essential the Vent
Assist Valves are removed and plugged prior to installation and
commissioning. A PTF4 pump must never be placed in service
in hazardous duty with a Vent Assist Valve attached. Reference
TI-5-030-US for PTF4 capacities without vent assist valve.
inert gases can be used in closed loop systems and purging the system
of all oxygen components must be performed with great emphasis. The
pump must be grounded to the system in which it is installed.
When maintaining or working on Pivotrol® pumps in hazardous
environments or pumping hazardous liquids, or using hazardous gases
as pumping motives, it is essential extra precautions must be taken to
ensure safe handling of liquids and gases to prevent burns, asphyxiation
and other personnel injury which may occur in locations in and around
the pump. Be aware of the flash point of gases in the environment
surrounding the pump. Be aware of the flash point of fluid’s vapor at the
operating pressure set for the pump. All precautions must be taken to
prevent the possibility of spark initiation.
Although the Pivotrol® pump is suitable for pumping hazardous fluids
and pumping in hazardous locations the enduser must always perform a
full risk-assessment of the environment into which the Pivotrol® pump is
being placed and must ensure there is no possibility of spark creation and
that every possibility is taken to ensure a safe working environment. Prior
to installation and commissioning of a Pivotrol® pump on low specific
gravity and volatile fluid applications always gain approval from the local
Safety Officer.
When pumping low specific gravity and volatile fluids or operating in a
hazardous location, the motive gas and liquid being pumped must be
an inert mixture. Always contact Spirax Sarco Inc technical support
department for advice and recommendations when pumping low specific
gravity fluids, such as hydrocarbons, which may be classed as volatile in
nature. See Figures 8 and 9 for typical hook-up sketches.
Awareness of flash point of gases must be considered, either those
surrounding the pump (environment) or those from the pumping fluid at the
set operating pressure. Pumping velocity of the fluid must remain below
3.3 ft./s to ensure no static build up of componentry or fluid will occur. Only
Vapor Supply
NC
To Vent
Condensor
NO
NO
NO
NO
NC
Vent Vacuum
Header
High Point
Accumulators
NC
NO
NO
Exhaust Line
NC
Vent
Vacuum
Header
Figure 8
Vapor
Inlet
Exhaust
Balance
NC
NO
High
Point
Accumulator
NO
NC
Process
Equipment
Process
Equipment
NO
NO
Exhaust Line
Alternate
Location
NO
NO
NO
NO
NC
Figure 9
NO
Process
Equipment
NC
Exhaust
Balance
Alternate
Vapor
Motive
Supply
ReservoirPipe
12”
Fill
Head
Strainer
Condensate
Return
11
NO
Condensate
Return
3.7 Recommended PTF4 Steam Inlet / Exhaust
Piping Hook Up
3.5 Open (vented) systems suitable for low specific
gravity and volatile fluid application with ASME
compliant pump
The PTF4 motive supply line should be sized correctly to ensure sufficient
motive capacity during the pumping stroke. A correctly sized inlet pipe
will prevent pressure spikes and dips during the pumping stroke and
ensure smooth operation and published capacities are met.
The Pivotrol Pump is not ATEX approved and
hence is not suitable for use in such applications
in the European Community.
®
At a minimum, the inlet piping should be at least 2” pipe from the supply
header dropping to the pump. Only when the motive inlet pipework is
close to 2 ft to the pump should the motive line piping be reduced and split
equally into two separate lines. These should be of equal diameter and
length to be fed into each mechanism’s motive inlet. This will ensure the
motive gas is supplied uniformly to each of the PTF4 pump mechanisms
and will provide synchronous operation of both mechanisms. Hook up
of the exhaust lines running from the pump must be clear and free to
atmosphere when piped in an open system, and clear and free when
piped into the reservoir in a closed system. The Vent Assist Valves must
be piped directly into either the pump’s receiver or, the pump’s vent line.
In this latter case the Vent Assist Valve exhaust line must be piped into
the vent line at least 12 inches away from the pump exhaust connection.
Traps discharge pipelines must not be piped into any of the pumps vent
lines. See Figure 10 below.
SPECIAL SAFETY NOTE: When using the PTF4 to pump hazardous
fluids and/or in hazardous locations it is essential the Vent
Assist Valves are removed and plugged prior to installation and
commissioning. A PTF4 pump must never be placed in service
in hazardous duty with a Vent Assist Valve attached. Reference
TI-5-030-US for PTF4 capacities without vent assist valve.
For low specific gravity and volatile fluid pumping applications see product
hook-up recommendations in Section 3.2 (Figures 3 and 4), however
closed systems as described in Section 3.4 are strongly recommended
by Spirax Sarco for volatile fluid applications rather than open (vented)
systems as an added safety precaution.
Although the Pivotrol® pump is suitable for pumping hazardous fluids
and pumping in hazardous locations the enduser must always perform a
full risk-assessment of the environment into which the Pivotrol® pump is
being placed and must ensure there is no possibility of spark creation and
that every possibility is taken to ensure a safe working environment. Prior
to installation and commissioning of a Pivotrol® pumps on low specific
gravity and volatile fluids applications always gain approval from the local
Safety Officer.
Figure 10
Awareness of flash point of gases must be considered, either those
surrounding the pump (environment) or those from the pumping fluid at
the set operating pressure. Pumping velocity of the fluid must remain
below 3.3 ft./s to ensure no static build up of componentry will occur.
Only inert gases can be used in closed loop systems and purging the
system must be performed with great emphasis. The pump must be
grounded to the system in which it is installed.
When maintaining or working on Pivotrol® pumps in hazardous
environments or pumping hazardous liquids, or using hazardous gases
as pumping motives, it is essential extra precautions must be taken to
ensure safe handling of liquids and gases to prevent burns, asphyxiation
and other personnel injury which may occur in locations in and around
the pump. All precautions must be taken to prevent the possibility of
spark initiation.
When pumping low specific gravity and volatile fluids or operating in a
hazardous location, the motive gas and liquid being pumped must be
an inert mixture. Always contact Spirax Sarco Inc technical support
department for advice and recommendations when pumping low specific
gravity fluids, such as hydrocarbons, which may be classed as volatile in
nature.
3.6 Multiple Pivotrol® Pumps
To ensure even wear and extended service life of each of the pumps in
a multiple pump set the pumps should not be staged so that a primary
pump operates continuously and the secondary pump seldom operates.
Each pump should be piped to ensure even operation of each pump.
When piping multiple pumps into a single return line an additional check
valve should be fitted in the single return line to reduce the likelihood
of water-hammer in the return line due to high flow rates and velocities
induced during multiple pump discharge cycles.
12
4.0 Start-up Procedures
5.0 Maintenance
4.1 Open and Closed systems suitable for ASME
and PED compliant pumps only (Reference
Sections 3.2 & 3.3)
CAUTION: Before removing the cover and mechanism assembly, be
sure the pump is completely isolated and relieved of any internal
pressure to prevent personal injury. Motive supply, exhaust / tieback, fluid inlet and discharge lines should all be closed prior to
performing any work on the pump. Also ensure any hot parts have
cooled to prevent risk of injury from burns. Use caution when
removing cover and gasket. Gasket contains thin stainless steel
reinforcement that may cause cuts to the skin. Care should be taken
to prevent personal injury from the strong snapping action of the
spring. When venting hazardous vapors, suitable personal protection
equipment (PPE) should be worn.
1. Slowly open supply medium (motive gas) to provide pressure at the
Pivotrol® Pump motive inlet valve. Check that trap/drainer on supply
line is operational.
2. Open gate valves in the Pivotrol® Pump inlet and discharge lines.
3. Open valve(s) ahead of pump allowing fluid to enter from the receiver/
reservoir and fill the Pivotrol® Pump body. Pump will discharge when full.
5.1 Inspection
4. Observe operation for any abnormalities. Pivotrol® Pump(s) should
cycle periodically with an audible exhaust at the end of the pumping
cycle. If exhaust line is tied back to receiver / reservoir or piped
away, and audible “click” will occur. If any irregularities are observed,
recheck installation instructions for proper hookup. Consult Spirax
Sarco if necessary.
Inspections should be performed on a regular basis to ensure the Pivotrol
Pump mechanism is functioning properly. This is especially important
when installed in a hazardous pumping application to ensure no potential
ignition sources or sparks can occur.
NOTE: Each mechanism assembly is factory set and tested. No
adjustment to the mechanism should be made. If the mechanism
assembly does not function correctly the entire mechanism should
be returned to the factory for replacement under the warranty terms.
5. If over-flow piping has been provided, check that a water seal has been
established. Prime over-flow piping if necessary.
4.2 Closed systems suitable for low specific
gravity and volatile fluid application with ASME
compliant pump (Reference Section 3.4)
Procedure:
1. Break and disconnect all connections to the cover. Remove cover
bolts and lift the cover and mechanism assembly from the body, noting
the cover orientation.
1. Energize all steam tracing and ensure the piping and equipment is hot,
and condensate drains properly from the tracing system.
2. Visually inspect the mechanism to verify that it is free of dirt and scale
and that the float and mechanism moves freely.
2. Evacuate all air components from the system piping and equipment.
NOTE: use of a vacuum system is mandatory to evacuate all oxygen
components. A vacuum is normally sequenced in stages to ensure
complete air removal and maintenance of the vacuum in each
section of piping prior to charging the system with heat transfer fluid
/ vapor / volatile fluid. Ensure vacuum is maintained throughout the
entire startup procedure.
3. To re-assemble, reverse the above procedure noting the following
points.
a. When installing the cover and mechanism in tight spaces the
mechanism should be held horizontally as shown in Figure 11-A/G.
Ensure gasket surfaces are clean and free of old gasket material
before installing a new gasket.
b. The float should be inserted into the pump body first, carefully
ensuring the cycle counter probe and paddle do not clash with the
body per Figure 11-B/H. Special attention must be made when fitting
the cover and mechanism assembly. Do not knock the mechanism
against the body or similarly hard object as this may dislodge the
pivots and can permanently affect the pumps performance.
c. As the mechanism is inserted into the pump body the mechanism
should be held vertically and gently lowered to its final resting
position as shown in Figure 11-C/J. The cover must be orientated
so the “V” cast in to the pump cover lines up with the body casting
“part line” as shown in Figure 11-D/K/L
3. Open the Pivotrol® pump discharge outlet valve(s).
4. Slowly open the supply at the main header to supply pressure to the
vapor pressure control stations and the Pivotrol® pump motive inlet.
Open the vapor supply valve very slowly to prevent hammer and raise
the pressure/temperature very slowly. Hot bolting/torqueing may be
required during the system heat-up procedure.
5. Open the Pivotrol® pump motive vapor valve(s).
6. Open the Pivotrol® pump liquid inlet valve(s).
7. Verify fluid flows to the Pivotrol® Pump(s) and that it is discharged.
Observe operation for any abnormalities. The Pivotrol® Pump(s) will
cycle periodically with an audible exhaust at the end of the pumping
cycle. If any irregularities are observed, shutdown the system, recheck
installation instructions for proper hook-up. Consult Spirax Sarco, if
necessary.
4. Assemble cover bolts and torque to 46-50 ft-lbs (155-165 ft-lbs for
PTF4 & 300-320 ft-lbs for PTF-HP) in a cross pattern as shown in
Figure 11-E / K / L.
4.3 Open systems suitable for low specific gravity
and volatile fluid application with ASME compliant
pump ( Reference Section 3.5)
5.2 Replacement
5. When replacing / inspecting a check valve, clean off gasket surface
before installing new gasket. Torque check valve nuts to 105-115 ft-lbs.
NOTE: Each mechanism assembly is factory set and tested. No
adjustment to the mechanism should be made. If the mechanism
assembly does not function correctly the entire mechanism should
be returned to the factory for replacement under the warranty terms.
The Pivotrol® Pump is not ATEX approved and
hence is not suitable for use in such applications
in the European Community.
For a replacements under warranty please contact Spirax Sarco
Inc. at 1-800-833-3246, for all other replacements or for spare items
please contact your local sales representative.
Reference Section 4.1 for start-up procedure. All vent lines must be
terminated in a safe area with no ignition sources present and away from
personnel.
13
Casting
Part
Line
Cover ‘v’
D
Figure 11
A — F: PTC & PTF
A
G — K: PTF
C
B
L: PTF-HP
8
1
4
5
Flange
Studs
F
Gaskets
6
Nuts
3
2
7
E
J
H
G
1
8
4
5
6
3
1
7
6
2
7
12
9
4
3
K
11
Cover "v"
8
14
E
10
5
2
L
6.0 Other Hook-up Sketches
FloatOperated
Air Vent
The hook-up sketches shown do not necessarily represent recommended arrangements for specific service conditions; but rather
serve only to illustrate the variety of applications where the pressure-powered pump can be utilized. Design requirements for each
application should be evaluated for the best condensate recovery
arrangement tailored to your specific needs.
Receiver
For use of the pressure powered pump in hook-ups other than
those described previously, and for any additional information
you may require, contact Spirax Sarco Applications Engineering
Department, toll free:
Figure 12
Pressure Powered Pump
Discharging to Long Delivery Line
*
(Air Eliminator needed with seal in piping)
Non-Electric
Pressure Powered Pump
1-800-833-3246
*See piping in Figure 15. Trap should
discharge into vented reciever.
†H - Total lift or back pressure is the height (H) in feet
x 0.433 plus PSIG in return line, plus downstream
piping friction presure drop in PSI calculated at a flow
rate of the lesser of the 6 times the actual condensate
flowrate.
LP
Flash
Steam
Exhaust Steam
Vented to
LP System
Total Lift
†H
Flash Recovery
Vessel
HP Condensate
& Flash Steam
Thermo-Dynamic
Steam Trap
Condensate
Wye
Strainer
Figure 14
Non-Electric
Pressure
Powered Pump
Figure 13
Pressure Powered
Pump Draining Water
from Sump Pit
Flash Steam Recovery
at Pressure Above or
Below Atmospheric
Wye
Strainer
Wye
Strainer
Non-Electric
Pressure
Powered Pump
Back
Pressure
Great
Than LP
Flash
Pressure
Thermo-Dynamic
Steam Trap
15” Swing Check
Wye
Strainer
Steam
Supply
1” Equalizer Line
Return
Main
Vacuum
Space
Vacuum
Breaker
Air Vent
Self Acting
Temperature
Control
Flow
Arrangement of Small Steam/
Liquid Heat Exchanger where
steam space pressure may fall
below back presure.
Temperature
Control
Sensor
Steam
Supply
Heater
Total Lift
H
P
Filling Head
Alternate
Discharge
Connection
Return
Wye
Strainer
Centrifugal Pump
Wye
Strainer
ThermoDynamic
Steam Trap
Pipe to Drain
Head “H” must be enough to give trap
capacity needed when steam space
pressure falls to zero.
Non-Electric
Pressure
Powered Pump
Spira-tec Steam Trap
Loss Detector
Vent
Float & Thermostatic
Steam Trap
Multiple Loads
Connected to
Vented Receiver
Figure 16
Pipe to
Drain
Figure 15 - Draining Condensate from Vacuum Space to Return Main
Draining Small Heat
Exchanger and Other Loads
to Pressure Powered Pump
* See piping Figure 15
Trap should discharge into
vented reciever.
15
Receiver
*
Non-Electric
Pressure
Powered Pump
7.0 Troubleshooting
If a correctly sized Pressure Powered Pump does not operate properly, an incorrect hookup is suspect in new installations. For existing installations
where the pump operates occasionally or not at all, the cause is often a change in the system supply or back pressure conditions beyond the original
design parameters. With the system conditions and problem symptoms determined, check the following in turn and correct as necessary.
Caution:
Symptom
1.Pump fails to operate on startup.
Cause
Check and Cure
1.a) Motive supply closed.
b) Condensate inlet line closed.
c) Condensate discharge line closed.
d) Motive pressure insufficient to
overcome backpressure.
e) Check valves(s) installed in wrong
direction.
f) Pump air-locked.
2.Supply line/equipment flooded, but
pump appears to cycle normally
(periodic audible exhaust observed).
2.a) Verify rate capacity per TI-5-030-US capacity table.
Increase check valve size or install additional pump
as required.
b) Verify required filling head per TI-5-030-US. Lower
b) Insufficient filling head.
pump to achieve required filling head.
c) Check motive pressure setting and maximum backc) Insufficient motive pressure to
pressure during operation. Compare to capacity
achieve rated capacity.
table of TI-5-030-US. Increase motive pressure as
required to meet load conditions.
Verify that fully ported fittings are used. Blowdown the
d) Restriction in condensate inlet line. d)
strainer, if fitted. Check that all valves are fully open.
e) Isolate inlet check valve and relieve line pressure.
e) Inlet check valve stuck open
Clean seating surfaces and reinstall or replace, if
(debris).
necessary.
3.a) Discharge line closed or blocked.
3.Supply line/equipment flooded, and
pump has stopped cycling (audible
periodic exhaust not observed).
f)On vented system, assure that vent line is unrestricted to atmosphere and self-draining to the pump or
receiver. On a closed system, isolate the pump from
the pressurized space being drained. (Exhaust tieback line closed.) Break exhaust connection at pump
cover. Keep personnel clear of exhaust connection.
If pump begins to cycle, air locking has occurred.
Recheck that exhaust tie-back is in accordance with
the installation instructions. Install a thermostatic air
vent at a high point in the exhaust line. Assure that
the equalizer line is self-draining.
2.a) Pump undersized.
Remove check valve & visually
inspect, body and plate faces, hinge
and spring.
1.a) Open valve(s) to supply motive
pressure to pump.
b) Open all valves to allow condensate to reach pump.
c) Open all valves to allow free discharge from pump
to destination.
d) Check motive pressure and static backpressure.
Adjust motive pressure to 15 - 20 psig higher than
static backpressure.
e) Verify proper flow direction and correct, if required.
b) Discharge check valve stuck
closed.
c) Insufficient motive pressure.
16
3.a) Check motive pressure and static back-pressure (at
pump discharge). If equal, a closed or blocked discharge line is suspected. Check all valves downstream
of pump to assure an unobstructed discharge.
b) After checking per 3(a), isolate discharge check
valve and relieve line pressure. Remove check
valve & visually inspect body and plate faces, hinge
and spring. Clean seating surfaces and reinstall or
replace, if necessary.­
c) If motive pressure is below static backpressure,
increase motive pressure setting to 15 - 20 psig
above static backpressure. Do not exceed rated
pressure limits of equipment.
For steps 3(d) through 3(g) —With exhaust/tie-back
line isolated from the equipment being drained
(close-loop systems), break the exhaust/tie-back
connection at the pump cover and—
Symptom
Important Safety Note:
For steps (d) through (g) it is necessary
to break the exhaust/tie-back line at the
pump exhaust connection. On closed
loop systems, care should be exercised
to assure that the pump is isolated
(motive supply, condensate inlet and
discharge, and exhaust/tie-back line
all closed) and that case pressure is
relieved prior to breaking this connection to avoid injury to personnel. Also,
under fault conditions, it is possible
that hot condensate may run out of the
exhaust connection when broken for
both closed loop and vented systems.
This possibility should be taken into
consideration when performing these
steps to avoid scalding of personnel or
water damage to nearby equipment.
Cause
Check and Cure
d) Motive inlet valve leaking and/or
worn.
e) Mechanism Faults
i) Broken spring
ii) Ruptured float
f) Exhaust/tie-back causing vapor
lock (vented or closed loop).
g) Inlet check valve stuck closed.
4.Chattering or banging in return main
after pump discharges.
5.Vent line discharging excessive flash
steam (vented applications only).
4.a) Vacuum created at pump outlet
after discharge because of acceleration/deceleration of large water
slug in return main (usually results
from long horizontal run with multiple rises and drops).
b) Pump “blow-by”.
d) Slowly open motive supply line, leaving the condensate inlet and discharge lines closed. Observe
the exhaust connection for steam or air leakage. If
leakage is observed, an inlet valve problem is indicated. Isolate pump, remove cover and mechanism
assembly and visually inspect. Replace inlet valve
and seat assembly.
e) With motive line open, slowly open condensate inlet
line to the pump, allowing pump to fill and observe
exhaust connection. Keep personnel clear of
exhaust! If condensate runs out exhaust connection, a mechanism fault is clearly indicated. Isolate
pump by shutting off motive supply and condensate inlet, remove cover and mechanism assembly,
and visually inspect. Examine springs and float for
obvious defects. Stroke mechanism and check for
any source of binding or increased friction. Repair
and/or replace all defects observed.
f)If mechanism is heard to trip and no fluid is observed
running out the exhaust connection, slowly open the
discharge line from the pump and observe operation.
Keep personnel clear of exhaust connection! If
pump cycles normally, a fault in the exhaust/tie-back
line is suspected. Recheck the exhaust/tie-back piping
layout for compliance with the installation instructions.
Exhaust/tie-back line must be self-draining to prevent
vapor locking the pump.
g) If mechanism is not heard to trip and fluid is not
observed running from the exhaust connection, it is
suspected that the fault lies in the condensate inlet
piping. Assure that all valves leading to the pump
have been opened. If so, this indicates that the inlet
valve is stuck closed. Isolate the pump and check
valve and relieve line pressure. Visually inspect the
head, seat and stem. Clean seating surfaces and
reinstall or replace, if necessary. Reinstall exhaust/
tie-back connection and open line.
4.a) Install a vacuum breaker at the top of the lift (at
high point in return line). For pressurized return
systems and air eliminator may be required downstream of the vacuum breaker. (See Fig. 12).
b)
Check condensate inlet pressure and static backpressure at the pump discharge. If the inlet pressure equals
or exceeds the static backpressure, a “blow through”
problem is suspected. On vented systems, check for
leaking traps discharging into the condensate inlet line
which would increase inlet line pressure. Replace any
faulty traps. On closed loop systems, if condensate
inlet pressure can exceed static backpressure under
normal operation (i.e. boost in equipment operating
pressure via a modulating control valve or significant
decrease in static return main pressure), a pump trap
combination is required. The pump trap combination
will prevent passage of steam into the return main and
allow the pump to cycle normally when condensate is
present (See Fig. 6)
5.a) Faulty steam traps discharging live 5.a) Check for leaking traps discharging into condensate return. Repair or replace faulty traps. (See also
steam into condensate inlet line
4(b), Pump “Blow-By”).
(See also 4(b), Pump “Blow-By”).
b) Vent receiver ahead of pump.
b) Excessive (over 50 lb/hr) flash
steam being vented through pump.
c) Isolate pump and remove cover and mechanism
c) Exhaust valve stuck or worn.
assembly. Remove exhaust head and seat assembly. Visually inspect seating surface. Clean and
reinstall or replace, if worn.
17
Spirax Sarco Inc. warrants only that its personnel will exercise their best
professional knowledge and judgment in performing services and that
work or materials supplied under the purchase order would conform to
contract specifications, be free of defects and workmanship and material
and reflect Spirax Sarco’s best technical knowledge and judgment. In
the event that either services provided or product sold are defective,
Spirax Sarco Inc. agrees only to reperform, repair, replace or modify the
defective service or products.
Purchaser expressly agrees that, notwithstanding any other provision of
this document to the contrary, under no circumstances shall Spirax Sarco
Inc.’s total aggregate liability resulting; (a) from the performance, failure
to perform or breach of Spirax Sarco’s obligation herein; and (b) from
any activity undertaken by Spirax Sarco with respect to the products and
services covered by this purchase order; and (c) from all actions based on
negligence or any kind, strict liability or tort, on the part of Spirax Sarco
Inc. or its suppliers or subcontractors or any tier; and (d) otherwise exceed
the price of the product or part on which such liability is based. Purchaser
expressly agrees that the remedies provided herein relating to warranties
are exclusive and that neither Spirax Sarco Inc. nor its suppliers or any
subcontractors or any tier will under any circumstances be liable under
any theory of recovery, whether based on contract, on negligence of any
kind, strict liability or tort, on the part of Spirax Sarco or its suppliers
or subcontractors or any tier; or otherwise, for damage to or loss of
property or equipment other than the equipment supplied hereunder; for
loss of profits or revenue; for loss of use of any of purchaser’s systems;
for increased cost of any kind, including but not limited to capital costs;
claims of customers or purchaser, including but not limited to claims for
service interruption; or for any direct, special, incidental or consequential
damages.
The above warranties are exclusive and are in lieu of all warranties of
merchantability, fitness for purpose or other warranties or guarantees of
any kind or description, expressed or implied.
The above warranties do not cover, and Spirax Sarco Inc. shall have
no responsibility for failure to meet, any warranty caused by any
failure of purchaser or its agents to store, install, operate, inspect or
maintain the product covered by the purchase order in accordance
with the recommendations of Spirax Sarco Inc. or in the absence of
such recommendations, in accordance with the generally accepted
practices in the industry, including but not limited to applicable quality
assurance procedures relating to the installation of products covered by
the purchase order. The remedies of purchaser set forth for the above
warranties are exclusive.
Seller makes no representations that the product being sold is free of the
rightful claim of any third person by way of patent infringement or the like
and disclaims any warranty against patent infringement with respect to
the product.
Repair, adjustment, reperformance, modification or replacement of any
equipment or services performed thereunder in the manner and during the
period provided herein shall constitute fulfillment of all liabilities of Spirax
Sarco Inc. to purchaser under the warranty set forth in this document,
whether based on contracts, on negligence of any kind, strict liability or
tort, on the part of Spirax Sarco Inc. or its suppliers or subcontractors of
any tier; or otherwise.
18
8.0 Declarations of Conformity (CE)
19
20
Spirax Sarco Applications Engineering Department
Toll Free at:
1-800-575-0394
SPIRAX SARCO, INC. • 1150 NORTHPOINT BLVD. • BLYTHEWOOD, SC 29016
spiraxsarco.com/global/us
PHONE 803-714-2000 • FAX 803-714-2200
21
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