Moro Fan Cooled PM80T Vacuum Pump Maintenance Manual

MORO USA, INC.
ST. LOUIS, MO OFFICE
PO Box 632
UNION, MO 63084
(866) 383-6304
Fax: (636) 583-2044
PITTSBURGH, PA OFFICE
SALES OFFICE
(800) 383-6304
(412) 415-0421
Fax: (412) 415-3154
Email: sales@morousa.com
www.morousa.com
Use and maintenance manual
Vacuum Pumps
PM80T
Authorized Moro Pump Distributor, Service & Repair Facility
120 – 10293 276 ST, Acheson, Alberta, Canada T7X 6A5
T: 780.962.1827 F: 780.962.1830 E: sales@fraserwoods.ca
www.fraserwoods.ca
ENGLISH
PRESENTATION
The vacuum pumps produced by Allestimenti Pompe Moro S.p.a. have a great tradition of reliability,
long life and versatility. They are available with various flow rates, types of operation and cooling.
The principle of rotating volumetric operation with vanes ensures that high degrees of vacuum are
reached and allows a vast field of application.
Industrial users of vacuum pumps require safe and constant running of pumps operating at a high
vacuum for long periods.
To satisfy this need, Allestimenti Pompe Moro S.p.a. has developed a unique technology of liquid
cooling even in the rotor, thus keeping lower temperatures inside the pump. This is to the advantage of
the lubrication, the vanes and the seals, thus allowing use in harsher conditions.
CONTENTS
Presentation........................................................... 2
Introduction ............................................................ 3
Storage .................................................................. 3
Dimensions ............................................................ 3
Packing .................................................................. 4
Lifting ..................................................................... 4
Data plate .............................................................. 4
Correct use ............................................................ 5
Installation ........................................................... 5-6
System diagram ..................................................... 7
Lubricants .............................................................. 8
Commissioning ...................................................... 9
Precautions during use of the pump ...................... 9
Pressure ................................................................ 9
Temperature .......................................................... 9
Maximum using time .............................................. 9
Maintenance ........................................................ 10
Running in ............................................................ 10
Periodic checks.................................................... 10
Flushing the inside of the pump body .................. 11
Checking vane wear ............................................ 12
Troubleshooting ................................................... 13
In order to improve the product, the manufacturer reserves the right to modify and update this
publication without notice All reproduction of this manual, even in part, is forbidden without the
authorisation of the manufacturer.
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INTRODUCTION
For good operation of the vacuum pump, carefully read these instructions for use.
This manual can help you solve al the problems that arise during assembly and use of the vacuum
pump. We recommend that you always keep the manual in the vicinity of the vacuum pump.
This manual is an integral part of the product.
KEEP THIS MANUAL WITH CARE FOR FUTURE CONSULTATION.
The user of the vacuum pump must be informed of the contents of this manual.
The manufacturer cannot be held responsible for any damage due to incorrect, erroneous or
unreasonable use.
STORAGE
To store the vacuum pump correctly, it must be stored as follows: - indoors, sheltered from external
atmospheric agents; - in a horizontal position, standing on its four feet. During inspection, the vacuum
pumps are lubricated in our factory with a particular oil which guarantees conservation of the various
internal components for about 6 months.
In the event of prolonged storage, we advise flushing the inside of the pump with Diesel fuel and
oil (see page 11), checking and, if necessary, changing the gaskets.
PERFORMANCE
1 - Rotation speed (direct coupling)
2 - Free air capacity
3 - Air capacity at 50% vacuum (15" Hg)
4 - Nominal vacuum
5 - Maximum pressure
6 - Power requirement at 15" of vacuum
7 - Power requirement at maximum pressure
8 - Power requirement at maximum vacuum
9 - Oil consumption
10 - Oil tank capacity
11 - Sound pressure level at a distance of 7m (23ft) 60% vacuum
12 - Weight
1100 rpm
350 cfm
270 cfm
28" Hg
29 psig
11 hp
35 hp
15 hp
0.0063 gal
1.2 gal
79 dB(A)_
401 lbs.
Fig.1
DIMENSIONS
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PACKING
The vacuum pump is supplied without packing. Special packing may be supplied on request, such
as:
- cardboard box;
- wooden bed and shrink-wrap for single packages;
- wooden pallet and shrink-wrap;
- wooden crates and shrink-wrap.
The packing components (bags, boxes, nails, etc.) must not be left within reach of children as they
are potential sources of danger.
LIFTING (Fig.1a)
The vacuum pump must be fitted only with a pair of straps.
WEIGHT: See table on page 3.
ATTENTION: Do not damage the pipes and oilers when lifting.
DATA PLATE
The data plate showing the main technical characteristics is located on the vacuum pump and is
always visible.
When purchasing the product, ensure that it has a nameplate. If not, immediately
notify the manufacturer and/or the dealer. Equipment without a plate must not be used;
otherwise the manufacturer declines all responsibility. Products without a plate must be
considered anonymous and potentially dangerous.
1 - Manufacturer
2 - “CE” mark
3 - Model
4 - Model code number
5 - Pump serial number
6 - Max. absorbed power
7 - Max. rotation speed (rpm)
8 - Year of manufacture
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CORRECT USE
The vacuum pump has been designed
especially for the intake and compression of
filtered air.
All other uses are to be considered improper.
INSTALLATION
LIFTING
The vacuum pump must be fitted only with a pair of
straps.
Allestimenti Pompe Moro S.p.a. has a list of all
the elements necessary for correct installation
of the vacuum pump.
Checking on delivery
All the accessories listed on the delivery note must
be checked on arrival to ensure they are in perfect
working order. The vacuum pump must not have
been damaged during transport. Check the shaft by
hand to ensure that it turns easily fig. 3.
Assembly of the vacuum pump
The assembly position on the vehicle must be
easily accessible and protected from stone
chippings or other objects that could damage the
vacuum pump. Leave enough room for the pump
and all the pipes of the suction and discharge
system and to allow free circulation of the cooling
air (see Fig.5A).
fig 3
Alignment of the vacuum pump, fig. 4.
The vacuum pump is usually secured to the chassis
of the vehicle or on a special bracket. The
transmission must rotate in the direction indicated
by the arrow on the pump. Avoid violent blows to
the pulley, the shaft and the coupling.
Do not create axial forces when mounting. The
couplings must be exactly aligned.
The vacuum pump must be mounted horizontally;
the maximum tolerance is an inclination of 5°.
fig 4
Transmission elements, fig. 5.
The transmission may be made by means of a
shaft, pulley or coupling. The pulley must be directly
connected to the shaft of the vacuum pump, taking
great care in assembly:
• The axis must be parallel, to avoid a different load
on the belts;
• the pulleys must be aligned, to avoid an excessive
axial load on the shaft of the vacuum pump.
fig 5
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The pump pulley cannot be used as a drive for other mechanisms.
Use only V-belts with profiles SPA, SPB, SPX.
For transmission with a cardan shaft, do not exceed the max. shaft inclination of 15°.
• The transmission parts must not be coupled by hammering them.
Suction pipes
Avoid installing pipes subject to internal corrosion. When assembled, the pipe must be clean on the
inside; accurately remove all welding slag, filings, rust or other foreign bodies.
Preventing the suction of liquids and foreign bodies
The vacuum pump must be protected against the suction of liquids or foreign bodies by means of a safety
valve with an automatically closing float and a suitable safety filter. Any intake of liquids or foreign bodies
could cause damage to the vanes, the shaft or the pump body.
Non-return valve
A special non-return valve is fitted in the vacuum pump. This valve closes when the pump is stopped,
thus preventing the return of fluids and reverse pump rotation.
Four-way valve
(Switch valve, fig. 6) The four-way valve puts the tank in connection with the suction or discharge of the
vacuum pump. It enables both vacuum and pressure to be created inside the tank. The valve is controlled
by the lever on the top of the pump.
Operate the switch valve only when wearing gloves.
During installation, leave sufficient space for air to circulate around the vacuum pump so as to
allow cooling.
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Fig. 8
SYSTEM DIAGRAM
1 - Suction pipe with shutter
7 - Discharge filter
2 - Tank
8 - Pressure gauge
3 - Manhole with float valve
9 - Pressure relief (14.5 psi)
4 - Cyclone filter
10 – Vacuum relief (-12 psi)
5 - Safety filter
11 - Thermometer (32/ +392°F)
6 - Vacuum pump
12 - Drainage cocks (3/8” - 1”)
Principal pipes in a double (line ) (4". recommended)
The thermometer (POS. 11) must be installed immediately downstream from the pump.
(Max. distance 2 inch.)
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LUBRICANTS
The vacuum pump is supplied without oil. Fill it
before use. (See table of technical
characteristics
on page 3).
Lubricate the front and rear bearing through the
grease nipple (Fig. 11 pag.19 every 100 hours.
Check the level of the disposable oil in the vacuum
pump from time to time by means of the dipstick
(fig.9).
Additional lubrication.
1 - Vacuum pump.
2 - Extra tank.
3 - Tap.
4 - Pipe.
To allow correct lubrication of the vacuum pump
even in the first minutes of cold operation, it is
advisable to install an extra external oil container
and to connect it to the pump intake by means of a
pipe with a tap.
Turn on the tap and let about 7 to 11 ounces (or ¼
to 1/3 quart) of oil to flow freely into the pump, then
turn off the tap.
This procedure must also be followed when the
pump is expected to be working under pressure for
periods of more than 10 minutes.
This procedure must also be followed when the
pump is expected to be subject to extreme
operating conditions:
 surrounding temperature 95 ° F
 continuous operation (3 hours and more)
of the pumps at 80% vacuum operating
over pressure
 suction or compression of aggressive
substances
RECOMMENDED OILS
(See table).
SUMMER SAE 40
WINTER SAE 30
Use SAE 50 for temperatures above 104°F and
SAE 20/W40 for temperatures below 41°F.
Pay great attention to extremely low temperatures;
in the event of necessity, contact an authorized
dealer or Allestimenti Pompe Moro S.p.a.
fig 10
MINIMUM SPECIFICATIONS
ALLOWED
API CD
CCMC D4
MIL L-2104 E (level)
MB 227.0 (monograde)
MB 227.1(multigrade)
Use only HD oil.
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COMMISSIONING THE SYSTEM
• Ensure that the level of the disposable oil in the tank for the vacuum pump is never less than the
minimum shown; top off if necessary.
• Open all the shutters and valves.
• Unscrew the cover of the dripper and fill with oil. Repeat the operation 4 or 5 times.
• Start the vacuum pump slowly for a brief period (about 300 rpm) to check the direction of rotation.
Check that rotation is in the same direction indicated by the arrow on the pump. If not, contact an
authorized dealer or AllestimentiPompe Moro S.p.a.
• Read the pressure gauges to see whether the switch valve is producing vacuum or pressure; see
“System diagram” on page 7. After all this has been checked, the pump is ready to start work.
ATTENTION: Never work with a rotation speed slower than 900 rpm, to avoid knocking and wear
of the pump body.
1 -Vane wear sight hole.
2 -Cap for loading the disposable lubricating oil.
3 - Switch valve operating lever.
4 - Grease nipple.
5 - Discharge cup
PRECAUTIONS DURING USE OF THE PUMP
During use, never touch the pump with your hands: danger of burning. Use gloves to operate the
switch valve.
The Manufacturer declines all responsibility for damage caused by the failure to observe the
instructions for installation, use and maintenance given in this manual.
Do not exceed the maximum rotating speed indicated on the plate, see page 5.
Keep the rotating speed within the range indicated in the table on page 3.
PRESSURE
See table page 3.
TEMPERATURE
The temperature at discharge of the vacuum pump must never be more than 392 °F. If the temperature
is too high, stop the vacuum pump and let it cool down.
IMPORTANT
The time indicated refers to normal working conditions with intermittent duty. For harsh conditions or for
continuous duty, contact a Allestimenti Pompe Moro S.p.a. authorized dealer.
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MAINTENANCE
ONLY THE MAINTENANCE JOBS AUTHORIZED IN THIS INSTRUCTIONS MANUAL MAY BE
CARRIED OUT BY THE USER. ALL OTHER OPERATIONS ARE FORBIDDEN.
RUNNING IN
The first 50 hours of actual operation of the pump are the run-in period. During this period, regularly
check the consumption of oil, the discharge temperature and the wear of the vanes. Vane wear should
be minimum or negligible. If it is excessive, wear must be checked at frequent intervals and the
phenomenon should be notified to an authorized dealer. In any case, replace the vanes when wear is 5
mm or more (see page 12).
It is forbidden to use a pump with more than 5 mm vane wear.
Failure to follow this warning relieves the manufacturer of all responsibility.
PERIODIC CHECKS
Periodic checks and maintenance of the machinery are recommended:
Several times a day:
Check the maximum temperature at discharge.
Daily:
Check the vacuum and the pressure during operation.
Daily:
Check the level of the oil.
Weekly:
Clean the filtering elements of all the filters.
Weekly:
Check the safety valve.
Monthly (or every 100 working hours):
Check vane wear.
ATTENTION
Sealing and sliding surfaces must be free from oil carbon deposits so that the function of the non-return
valve is preserved; brief period of free suction is suggested before switching off the pumps.
IMPORTANT:
The times indicated refer to normal working conditions. For harsh conditions, decrease the intervals for
each operation.
Keep the pump clean in order to allow better cooling.
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FLUSHING THE INSIDE
OF THE PUMP BODY
1 - Diesel oil
2 - Input pipe
3 - Free air flow
4 - Discharge filter
5 - Drainage cocks
1) Switch off the drive system and release the
vacuum or pressure from the tank and the suction
and discharge system.
2) Open the cistern shutters. Prepare the system so
as to allow the passage of free air through the
vacuum pump in the direction going from the tank to
the discharge.
3) Fill a container with about 1 gallon of diesel fuel.
4) With a clamp, connect a rubber hose to the
drainage tap upstream from the vacuum pump.
5) Immerse the free end of the hose in the container
of diesel fuel.
6) Start the vacuum pump and check suction of the
diesel fuel (about 3-4 min.), repeating the operation
of necessary.
7) Stop the vacuum pump.
8) Remove the rubber hose; drain and clean the
pipes and the discharge filter.
Collect the diesel oil residue and any sludge and
dispose of it suitable.
9) When starting next time, follow the same
procedure as for the first starting, see page 9, and
with additional lubrication, see page 8.
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CHECKING VANE WEAR
It is possible to check the wear of the rotor vanes
without dismantling the pump:
• Remove the hexagonal socket cap, fig. 11, page 9.
• Insert a rod (diameter 6 mm, length 100 mm) in the
hole as in figure 13.
• Turn the rotor shaft by hand until the rod touches
the external diameter of the rotor, figure 13.
• With a marking awl, mark the rod at the position of
the threaded hole, figure 13.
• Turn the rotor again until the rod enters one of the
slots in the vanes, figure 14.
• Mark the rod with the awl again and measure the
difference between the two measurements, figure
14.
• The maximum difference may be 5 mm. If it is any
larger, all the vanes must be replaced immediately.
If all the vanes have to be replaced, apply to an
authorized service centre.
Working with a worn vane may cause serious
damage to the vacuum pump.
Failure to follow this warning relieves the
manufacturer of all responsibility.
After measuring, screw the cap on again with
sealing paste or Teflon.
ATTENTION: When the cap is not tight, the flow
rate and vacuum are reduced.
Insist on original Allestimenti Pompe Moro S.p.a.
spare parts.
IMPORTANT:
For maintenance and/or repairs, use only
original spare parts which offer greater quality,
reliability and safety. Failure to use original
spare parts relieves the manufacturer of all
responsibility.
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TROUBLESHOOTING
FAULT
CAUSES
REMEDIES
Reduced vacuum.
Leakage or partial obstruction in
the system components.
The vanes are stuck in their seat.
No lubrication.
Check the valves and elements in
the system.
Flush the vacuum pump with
diesel fuel (see page 11).
Check the level of the disposable
oil and dripping of the oiler.
Inverse rotation of the vacuum
pump, with vacuum in the tank.
Non-return valve not hermetically
sealed.
Apply to an authorized service
centre.
Excessive continuous knocking
noise.
Excessive vane wear.
No lubrication.
The vanes are stuck in their seat.
Rev speed too low.
Change the vanes. Apply to an
authorized service centre.
Check the level of the disposable
oil.
Flush the vacuum pump with
diesel fuel (see page 11).
Increase the number of revs to
above 1100 rpm.
Overheating of the vacuum
pump.
Operation conditions too harsh or Let the pump cool. Apply to an
continuous.
authorized service centre.
The pump does not reach rated
pressure, or gets stuck.
Suction of liquids, mud or foreign
bodies.
Flush the vacuum pump with
diesel fuel (see page 11).
Excessive consumption of
oil.
Use gaskets.
Apply to an authorized service
centre.
If the fault persists, apply to an authorized service centre.
REMOVING FROM SERVICE AND SCRAPPING
Before demolition of the vacuum pump, the following materials must be separated:
- lubricating oil;
- rubber and plastic parts;
- cast iron, steel and aluminium parts; these must be disposed of appropriately.
• Do not dump the vacuum pump in the environment.
• To dispose of lubricating oil, apply to the special treatment services.
Do not use parts dismantled as scrap for spare parts.
Failure to follow this warning relieves the manufacturer of all responsibility and constitutes
negligent use of the product.
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