Emerson 185 Switch User Manual

Operator’s
Manual
Series 185
Automatic Transfer Switches
100 through 400 ampere sizes
DANGER is used in this manual to warn of high
voltages capable of causing shock, burns, or death.
WARNING is used in this manual to warn
of possible personal injury.
CAUTION is used in this manual to warn
of possible equipment damage.
An experienced licensed electrician must install the ATS.
Refer to the outline and wiring drawings provided with
your ASCO Series 185 ATS for all installation details.
ASCO Series 185 Automatic Transfer Switches (ATSs) are
Listed under Underwriter’s Laboratories Standard for
Transfer Switch Equipment, UL–1008. They are intended
for use only in optional standby systems in accordance with
the National Electrical Code, NEC/NFPA 70, Article 702.
This ATS is for use with 2–wire automatic start generators
only.
Refer to Application Informaton 381339–292 to confirm
that you have selected tha appropriate product for the
intended installation.
This automatic transfer switch is intended for standby
power applicatons in residential / light commercial use only.
This product is not intended for emergency
or life–support systems.
If you have more stringent application requirements contact
ASCO Power Technologies for other products suitable for
critical applications.
Rating Label
Each automatic transfer switch contains a rating label to
define the loads and fault circuit withstand / closing ratings.
Refer to the label on the transfer switch for specific values.
Do not exceed the values on the rating label.
Exceeding the rating can cause personal
injury or serious equipment damage.
TABLE OF CONTENTS
page
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 1
CONTROLLER . . . . . . . . . . . . . . . . . . . . . . . . 2–5
FUNCTIONAL TEST . . . . . . . . . . . . . . . . . . . . . . 6
SEQUENCE OF OPERATION . . . . . . . . . . . . . 7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 8–9
100–230 ampere sizes
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
50 Hanover Road, Florham Park, New Jersey 07932–1591 USA
For sales or service call 1 800 800–2726 (ASCO) www.ascopower.com
381333–319 A
ASCO POWER TECHNOLOGIES CANADA PO Box 1238, 17 Airport Road, Brantford, Ontario, Canada N3T 5T3
telephone 519 758–8450, fax 519 758–0876, for service call 1 888 234–2726 (ASCO) www.asco.ca
Series 185
Nameplate
Catalog Number Identification
The Transfer Switch nameplate includes data for each
specific ASCO Series 185 ATS. Use the ATS only
within the limits shown on this nameplate.
A typical Catalog Number is shown below with its
elements explained. The example is for a D–design,
2 pole, 200 A, 220–240 V, in a Type 1 indoor enclosure:
D 185
Neutral
A – standard
A
Phase Poles
2 – single Ø
clock battery
2
200
F
Amperes
100
200
230
260
400
4
Voltage
F 220--- 240
C
Controller
Enclosure
4 – standard
C – Type 1
M – Type 3R
4X – if
accessories
ordered
load power
connections
cable spacers
(see INSTALLATION)
emergency
power
connections
neutral
connections
terminals
for optional
switch
position
contacts
(shown
installed)
Transfer
Switch
ground
connections
membrane
controls
generator
control
connections
Controller
harness plug
utility power
connections
200 ampere size in typical enclosure with location of customer connections
381333–319 A
INSTALLATION
Installation of the ASCO Series 185 automatic transfer
switch (ATS) must be performed by a licensed electrician.
It must be installed according to the National Electrical
Code (NEC) and all local electrical code requirements.
Remove the enclosure cover and inspect the ATS for
shipping damage. If damage is evident do not install the
ATS.
1 --- Mounting
Series 185
2 --- Electrical Power Connections
Refer to the wiring diagram. The ATS must be protected
by suitably sized circuit breakers feeding the utility and
generator source terminals. The rating of the circuit
breakers must be based on the requirements of the
National Electrical Code for its nameplate ampere and
short circuit withstand ratings.
ELECTROCUTION HAZARD Turn off utility
power and turn off the generator to prevent
electrocution when wiring the transfer switch.
Refer to the enclosure outline drawing. Mount the ATS
according to details and instructions shown on this
diagram. Mount the ATS vertically to a rigid supporting
structure. Level all mounting points by using flat washers
behind the holes to avoid distortion of the enclosure.
Cable Spacers for 200 and 230 A
Three cable spacers are included with 200 and 230
ampere transfer switches. Run the copper power cables
through the cable spacers as shown in Figure 2. Position
the cable spacers approximately 1½ inches from the
terminal lugs.
MALFUNCTION or SHORTENED LIFE
Protect the ATS from construction grit and metal
chips to prevent malfunction or shortened life.
Transfer switches rated 260 and 400 amperes are
mounted on an insulator backing piece (installed behind
the transfer switch). If the transfer switch is removed
from the enclosure and then reinstalled, this insulator
must be placed behind the transfer switch. See Figure 1.
CABLE LOOSENING DUE TO SHORT CIRCUIT
Install three cable spacers 1 1/2 inches from
the power terminals to prevent the cables from
loosening during a short–short condition.
FLASH HAZARD – DAMAGE
Be sure that the insulator piece is installed behind
the 260 and 400 ampere transfer switches.
cable spacers
insulator
backing
piece
1 ½ inch approximate
use copper power
cables only for
200 and 230 A
cable spacer
Figure 2. Cable spacers for 200 and 230 A.
Figure 1. Insulator for 260 and 400 A.
1
381333–319 A
CONTROLLER
Series 185
The Group 4 digital Controller is used in ASCO Series
185 automatic transfer switches. It provides the sensing,
timing, and control functions for the ATS. This micro–
processor–based controller includes built–in control
buttons and status lights for control of the ATS and
generator.
1 --- Push Buttons
On the front control display are three push buttons that
control the operation of the generator and the ATS.
Before using the transfer test button, be sure that
conditions are safe for running the generator and
for load transfer.
clock
battery
cover
see page 3
Transfer Test
Use this button to test the system. This operation starts
the generator and transfers the load. Be sure that
conditions are safe to do this operation.
Bypass Time Delay
Use this button to cancel the active time delay or exercise
period (stops the generator after cooldown).
Set Engine Exerciser
Utility
Acceptable
light
Transfer
Test
button
Use this button to set the automatic generator exerciser
(page 3).
Load on
Utility light
2 --- Indicator Lights
Bypass
Time Delay
button
On the front control display are five lights that indicate
the status of the sources and the ATS.
Set
Exerciser
button
Load on
Generator
light
Automatic
Generator
Exerciser
light
Utility Acceptable
This light indicates that the utility voltage is acceptable
for connection to the load.
Generator
Acceptable
light
Generator Acceptable
This light indicates that the generator voltage is
acceptable for connection to the load.
Figure 3. Front view of controller.
Load on Utility
This light indicates that the generator voltage is
acceptable for connection to the load.
Load on Generator
This light indicates that the generator voltage is
acceptable for connection to the load.
Automatic Generator Exerciser
When the utility is acceptable and the load is on the
utility, this light flashes the number of days until the next
exercise period. When it is off, no exerciser period is set.
The light is also off when the generator is running.
381333–319 A
2
CONTROLLER (continued)
Series 185
3 --- Generator Starting Contacts
5 --- Automatic Generator Exerciser
The generator starting contacts connections are on the
controller. Refer to the generator manual. Disconnect
the generator battery and verify that the ignition switch is
in the OFF position. Connect the generator starting
wires to the appropriate terminals on terminal block TB7
as shown on the wiring diagram. For wiring convenience
terminal block TB7 has a removable plug. See Figure 4
and Table A.
The built–in automatic generator exerciser can be set to
exercise the generator for 20 minutes once every week.
Clock Battery
Be sure a fresh battery is installed and turned on. It will
maintain the exerciser clock for about 24 hours in case of
a power outage.
Recommended 9 volt alkaline batteries are (see Figure
5): Duracell MN 1404, Everready 522, Panasonic 6AM6
Turn on battery by putting S2 DIP switch actuator 10 in
the on position (up). See Table B and Figure 6.
1 2 3 4 5 6 7 8 9
Exercise with or without Load
TB7
removable
terminal block
Figure 4. TB7 generator starting contact terminals.
The generator should be exercised under load or follow
the recommendations of the generator manufacturer. Be
sure the exerciser is turned on. Then select either
exercise with or without load. The ATS will transfer the
load to the generator when the exercise with load is
selected. See Figure 6 and Table B.
Table A. Generator Start Connections
Table B. Generator Exercise Settings
TB7–4, TB7–5, TB7–6
When the Utility fails
Terminals on Controller
Function
Factory
Setting
DIP
Switch
DIP
Actuator
contact closes
TB7–4 and TB7–5
contact opens
TB7–5 and TB7–6
clock
battery
off
S2
10
exerciser
off
S1
7
with load or
without load
without
load
S1
8
4 --- Settings
The time delay and sensor setting in the Group 4
controller are accessible on the inside. Refer to Tables B
and C and to Figures 6 and 7. Use a ball–point pen or
other pointed tool to slide the DIP switch actuators up or
down to match setting shown.
Actuator
Position
on (up)
off (down)
on (up)
off (down)
without (up)
with (down)
To Set Exerciser
Press and hold (5 seconds) the Set Engine Exerciser
button. The exercise period occurs immediately and at
the same time weekly thereafter. The status light below
the button blinks rapidly to indicate that the exerciser
has been set. The number of flashes indicates the
number of days until the next exercise period (at
approximately the same time the button was pressed).
All power must be off before making any changes.
The factory default settings are shown in Table G on
page 5.
To Cancel an Active Exercise Period
cover must be removed
to replace 9V battery
(use alkaline type)
Press the Set Engine Exerciser button to stop an
exercising generator. If exercise with load is set, the ATS
retransfers the load to the utility, then stops the
generator after cooldown.
screw
Figure 5. Battery replacement.
3
381333–319 A
CONTROLLER (continued)
Series 185
S1 DIP switch
S3 DIP switch
S2 DIP switch
Figure 6. DIP switches S1 and S2 at the top right.
The time delay settings are shown in Figures 6 and 7 and
in Table C. The sensor settings are shown in Figure 6
and in Table D. The standard (factory) settings are
shown in Tables C, D, and H.
Figure 7. DIP switch S3 at the bottom center.
Table C. Time Delay Settings
Time Delay Description
Factory Setting
override momentary
utility outages
3 seconds
transfer to generator
10 seconds (approx.)
override momentary
generator outages
4 seconds
transfer to utility
15 minutes (approx.)
unloaded running
(generator cooldown)
5 minutes
Settings
DIP Switch
DIP Actuator
Actuator Position
1 second
S2
1
on (up)
3 seconds
S2
1
off (down)
–
–
–
–
4 second
S3
9
on (up)
0
S3
9
off (down)
–
–
–
–
5 minutes
S1
10
on (up)
0
S1
10
off (down)
Table D. Voltage and Frequency Settings
Setting Description
voltage
frequency
phase
Setting
Factory Setting
Settings
DIP Switch
DIP Actuator
Actuator Position
–
220 – 240 V
non–adjustable
S2
2
on (up)
50 Hz
S1
4
on (up)
nominal
60 Hz
–
single
pickup
198 V
60 Hz
S1
4
off (down)
non–adjustable
S1
2
off (down)
198 V
S1
3
on (up)
209 V *
S1
3
off (down)
S1
1
off (down)
S1
2
off (down)
S1
1
on (up)
S1
2
off (down)
S1
1
off (down)
S1
2
on (up)
S1
1
on (up)
S1
2
on (up)
non–adjustable
–
–
–
non–adjustable
–
–
–
198 V *
utility voltage
187 V
dropout
187 V
176 V
154 V
generator voltage
generator frequency
pickup
198 V
dropout
165 V
pickup
57 Hz (nom 60 Hz)
48 Hz (nom 50 Hz)
dropout
51 Hz (nom 60 Hz)
43 Hz (nom 50 Hz)
* If the dropout voltage is set to 198 V, the pickup voltage must be set to 209 V.
381333–319 A
4
CONTROLLER (continued)
7 --- Factory Settings --- Summary
6 --- Remote Control Features
These remote control features require a customer–
supplied normally–closed contact suitable for a 5 V dc
low energy circuit. Refer to the wiring diagram provided
with the ATS. Activate the appropriate DIP switch S3
actuators as shown in Tables E, F, or G. See Figure 7.
Table H. Factory Settings – Summary
DIP Switch
Remote test
Normally–closed input. When opened, it simulates a
utility failure. The generator is signalled to start
immediately and the load transfers to the generator (if
acceptable). If the generator fails, the load stays on the
generator until the remote test circuit is closed.
S1
Table E. Remote test
Function
Factory
Setting
DIP
Switch
DIP
Actuator
disabled
enabled
disabled
(on)
S3
3
Actuator
Position
on (up)
off (down)
Remote test (with automatic retransfer)
S2
Normally–closed input. When opened, it simulates a
utility failure. The generator is signalled to start
immediately and the load transfers to the generator (if
acceptable). If the generator fails, the load transfers
back to the utility (if acceptable).
Table F. Remote transfer to generator
Function
Factory
Setting
DIP
Switch
DIP
Actuator
disabled
enabled
disabled
(on)
S3
2
Actuator
Position
on (up)
off (down)
S3
Bypass load transfer to utility time delay
Normally–closed input. When opened, it bypasses or
cancels the generator to utility load transfer time delay.
The load transfers back to the utility.
Table G. Bypass load transfer to utility time
delay
Function
Factory
Setting
DIP
Switch
DIP
Actuator
disabled
enabled
disabled
(on)
S3
1
Series 185
DIP Actuator
Actuator Position
1
on (up)
2
off (down)
3
on (up)
4
off (down)
5
off (down)
6
on (up)
7
off (down)
8
off (down)
9
off (down)
10
on (up)
1
off (down)
2
on (up)
3
off (down)
4
on (up)
5
on (up)
6
on (up)
7
on (up)
8
on (up)
9
off (down)
10
off (down)
1
on (up)
2
on (up)
3
on (up)
4
on (up)
5
on (up)
6
off (down)
7
on (up)
8
on (up)
9
on (up)
10
on (up)
Actuator
Position
on (up)
off (down)
5
381333–319 A
Series 185
FUNCTIONAL TEST
After installing the Series 185 automatic transfer switch
(ATS) perform the following three–part functional test.
maintenance handle
With ALL POWER OFF
grasp maintenance
handle and turn it
quickly with your
thumb and fingers.
1 --- Manual Operation
A handle is provided on the transfer switch for maintenance purposes only. Manual operation of the transfer
switch should be checked before it is energized (operated
electrically).
weight marked P (utility) and A (generator)
Figure 8. Maintenance handle for 100–230 A.
Do not manually operate the transfer switch
until both power sources are disconnected:
open both circuit breakers.
1.
Turn OFF both the utility and generator circuit
breakers feeding the ATS. Verify that ALL POWER
IS OFF!
2.
100–230 A
Grasp the maintenance handle and turn it quickly
with your thumb and fingers to manually operate the
transfer switch.
260–400 A
Insert the maintenance handle into the hole in the
shaft, left side of the operator. Move the handle as
shown to manually operate the transfer switch.
3.
4.
hole
shaft
Figure 9. Maintenance handle for 260–400 A.
3 --- Electrical Operation
This procedure checks the electrical operation of the ATS.
The switch should operate smoothly without binding.
If it does not, check for shipping damage or
construction debris.
After checking the manual operation, use the handle
again to return the transfer switch to the utility
source position.
100–230 A see Figure 8.
The letter P (utility) on the round weight is facing
you.
260–400 A see Figure 9.
The letter N (utility) on the round weight is facing
you.
Remove the maintenance handle and store it on the
transfer switch in the place provided.
260–400 A Remove the maintenance handle
before proceeding!
2 --- Voltage Checks
The ATS is rated for 220–240 V ac 60 or 50 Hz. Verify that
both the utility and generator sources are 220–240 V ac 60
or 50 Hz.
381333–319 A
maintenance
handle
1.
Install the enclosure cover and tighten the screws.
2.
Verify that the generator battery is connected and
that the generator’s starting controls are set for
automatic.
3.
Turn on both the utility and generator circuit breakers.
4.
Verify that the Utility Acceptable and Load on Utility
lights are on.
5.
This step will start the generator. Press and hold the
Transfer Test button until the Generator Acceptable
light comes on and stays on. Then release the button.
6.
After the Generator Acceptable light comes on, the
ATS transfers the load from the utility to the
generator (after approx. 10 second delay). The Load
on Generator light comes on.
7.
The ATS stays connected to the generator for 15
minutes (approx.). The utility must be acceptable for
15 minutes continuously. Then the load is transferred back to the utility. To bypass time delay, press
the Bypass Time Delay button.
8.
After load retransfer to utility, the generator runs 5
minutes (without load), then shuts down. The
Generator Acceptable light goes off indicating that
the generator is off.
This completes the Functional Test.
6
Sequence of Operation --- Utility Failure
Series 185
light is on
light is off
¡
generator
stops
Utility power good.
Electrical loads on utility
generator runs
unloaded
for 5 min.
utility acceptable
Utility fails
(longer than
3 sec.)
load on utility
¥
electrical loads
switched back
to utility
©
utility acceptable
generator off
load on utility
wait 15 min.
for utility
to stabilize
generator
acceptable
utility
acceptable
start
generator
utility off
observe
these
power
lights
observe
these
switch
lights
load off
generator off
generator
starting
utility off
load on utility
load on generator
utility off
generator acceptable
¤
utility
returns
load on generator
waiting for utility
to return
generator
acceptable
¢
generator
acceptable
wait 10 sec.
for generator
to warm up
generator acceptable
£
electrical loads
switched to generator
7
381333–319 A
TROUBLESHOOTING
Series 185
This troubleshooting guide describes some of the simple
causes of problems with the installation of the automatic
transfer switch. Troubleshooting beyond the scope of this
guide should not be attempted by the installer. A licensed
electrician must perform all internal troubleshooting.
ASCO Power Technologies can be contacted at:
1–800–800–2726 or customercare@asco.com
Problem
The Utility Acceptable light
1.
does not come on when utility 2.
power is connected to the ATS.
381333–319 A
With ALL POWER OFF, verify that the utility feed is 220–240 V ac and 60 Hz.
Check DIP switch S2 actuator 2, and DIP S1 actuator 4. See Table D for voltage
and frequency settings.
With ALL POWER OFF, verify that the utility feed is wired to the terminal lugs
on the bottom of the transfer switch marked L1 and L5. See the wiring diagram.
4.
With ALL POWER OFF, verify that the transfer switch harness is connected
properly to the controller (plug and receptacle tight).
Hold the Transfer Test button for at least 15 seconds.
Verify that the generator starting controls are set for automatic operation (not in
manual mode).
Verify that the generator battery is connected and that the battery voltage meets
the generator manufacturer’s recommendation.
4.
Verify that the correct contact (normally open or normally closed) is being
utilized (see the generator manual).
5.
With ALL POWER OFF, verify engine start low voltage wiring between the
controller terminal block and the generator. See the wiring diagram. Check that
the plug is properly seated in the receptacle on the controller.
Verify proper generator operation (fuel in tank, oil level, spark plugs --- see
generator manual).
The generator cranks but does 1.
not start and run when the utility source fails or when the
Transfer Test button is pressed. 2.
The generator starts and runs
but the ATS does not transfer
the load to the generator.
Cause and Solution
Verify that the utility feed is connected and that its circuit breaker is ON.
3.
The generator does not crank
1.
when the utility source fails or 2.
when the Transfer Test button is
pressed.
3.
The generator starts and runs
but the Generator Acceptable
light does not come on.
ELECTROCUTION FLASH HAZARD Do not work
on the transfer switch until both the utility and
generator are off. Turn OFF both circuit breakers.
1.
With ALL POWER OFF, verify engine start low voltage wiring between the
controller terminal block and the generator. See the wiring diagram. Check that
the plug is properly seated in the receptacle.
Verify that the generator feed is connected and that its circuit breaker is ON.
2.
With ALL POWER OFF, verify that the generator feed is 220–240 V ac and 60
Hz. Check DIP switch S2 actuator 2, and DIP S1 actuator 4. See Table D for
voltage and frequency settings.
3.
With ALL POWER OFF, verify that the generator feed is wired to the terminal
lugs on the top of the transfer switch marked L2 and L6. See the wiring diagram.
4.
With ALL POWER OFF, verify that the transfer switch harness is connected
properly to the controller (plug and receptacle tight).
5.
1.
Verify generator ac output (voltage and frequency --- see generator manual).
Verify that the Generator Accepted light is on. If it is off, see previous troubleshooting problem. The ATS will not transfer the load to an unacceptable source.
2.
With ALL POWER OFF, verify that the transfer switch harness is connected
properly to the controller (plug and receptacle tight).
8
TROUBLESHOOTING (continued)
Series 185
Problem
The ATS does not immediately 1.
transfer the load to the
generator.
2.
Cause and Solution
Verify that the Generator Accepted light is on. If it is off, see previous troubleshooting problem. The ATS will not transfer the load to an unacceptable source.
3.
1.
Press the Bypass Time Delay button for immediate load transfer to the generator.
The generator may be overloaded. Check to see if the generator circuit breaker
tripped. Check the sum of the loads to be sure it does not exceed the capacity of
the generator. Some motor loads require three times more power for starting.
2.
Check for short circuit in a connected load.
3.
1.
Observe the Load on Utility and Load on Generator lights.
Verify proper generator operation; it may have run out of fuel or shut down
because of low oil level (see generator manual).
2.
The generator may be overloaded. Check to see if the generator circuit breaker
tripped. Check the sum of the loads to be sure it does not exceed the capacity of
the generator. Some motor loads require three times more power for starting.
3.
Check for short circuit in a connected load.
4.
1.
Observe the Load on Utility and Load on Generator lights.
Verify that the Utility Accepted light is on. The ATS will not transfer the load to
an unacceptable source.
2.
Wait approximately 15 minutes for the retransfer to utility time delay. The utility
must be acceptable for 15 minutes continuously.
3.
1.
Press the Bypass Time Delay button for immediate load retransfer to the utility.
Wait approximately 5 minutes for the unloaded running (engine cooldown) time
delay.
2.
1.
The engine cooldown fixed time delay is important to prevent generator damage.
Verify that the Automatic Generator Exerciser light is blinking. When the utility is
acceptable and the load is on the utility, this light flashes the number of days until
the next exercise period. When the light is off, no exercise period is set. The
light is also off when the generator is running.
2.
With ALL POWER OFF, verify that the exerciser is turned on. Check DIP switch
S1 actuator 7, and S2 actuator 10. See Table B for generator exerciser settings.
3.
With ALL POWER OFF, check the 9 volt battery. Replace, if necessary, with a
quality alkaline battery: Duracell MN1404, Everready 522, Panasonic 6AM6, or
equivalent. See Figure 5.
With ALL POWER OFF, verify that exercise with load is turned on. Check DIP
switch S1 actuator 8. See Table B for generator exerciser settings.
The ATS transfers the load to
the generator, but the generator bogs down (struggles or
slows down). The ATS retransfers back to the utility.
The generator stops after a
running for awhile. The ATS
retransfers back to the utility
(if acceptable).
The ATS does not retransfer
the load back to the utility.
The ATS retransfers the load
back to the utility but the
generator keeps running.
The generator exerciser does
not seem to work.
The generator exerciser does
not transfer the load to the
generator.
1.
Wait approximately 10 seconds for the transfer to generator time delay. This
fixed delay allows the generator output to stabilize before a load is applied to it.
9
381333–319 A
INDEX
Series 185
A
H
Automatic Generator Exerciser, light,
2
S
handle, maintenance, 6
warning, 6
harness, inside cover
B
HELP
800–800–2726 (ASCO)
customercare@asco.com
battery, clock, 3
buttons, push, 2
I
Bypass Time Delay, button, 2, 6
C
indicator lights, 2
installation, 1
cable spacers, 1
insulator, backing piece, 1
illustration of, 6
warning, 6
catalog number, inside cover
clock battery, 3
L
connections
electrical power, 1
engine control contact, 1
contacts
engine control, 1
control features, remote, 5
controller, 2–5
dropout, 4
E
manual operation, 6
illustration of, 6
warning, 6
mounting, 1
timer (gen exerciser), how to set, 3
functional test, 6
Transfer Test, button, 2, 6
troubleshooting, 8–9
problem, 8–9
rating label, cover
Generator Acceptable, light, 2, 7
unloaded running, gen. cooldown, 4
Utility Acceptable, light, 2, 7
R
generator
frequency, 4
settings, 4
starting contacts, 3
voltage, 4
U
Utility
failure, 7
frequency, 4
settings, 4
voltage, 4
pickup, 4
G
terminal block, 1
transfer switch position lights, 2
P
features, see control features
frequency, pickup and dropout, 4
T
time delay
adjustment, 3, 4
gen–set cooldown, 4
how to change, 3
override momentary outages, 4
settings, 3–5
transfer to emergency, 4
transfer to normal, 4
override momentary outages, 4
F
switches, DIP, 3–5
test, functional, 6
operation
electrical, 6
manual, 6
sequence of, 7
engine starting contacts, 3
spacer, cable, 1
Load on Generator, light, 2, 7
O
engine exerciser, 3
source acceptable lights, 2
lights, 2, 7
electrical operation, 2, 6
electrical power connections, 1
settings
changing, 3---5
factory, 3---5
frequency, 3, 4
phase, 4
time delay, 3, 4
voltage, 3, 4
TB7 generator start connections, 3
M
DIP switches, 3–5
Set Engine Exerciser, button, 2, 3
labels,
operator, transfer switch, 6
rating, cover
Load on Utility, light, 2, 7
D
service,
800–800–2726 (ASCO)
customercare@asco.com
remote control features, 5
bypass transfer time delay, 5
remote test, 5
remote transfer to emergency, 5
V
voltage, phase, 4
voltage, pickup & dropout settings, 4
voltage checks, 6
ground connection, inside cover
381333–319 A
Printed in U.S.A.
10
Copyright --- ASCO Power Technologies, L.P. 2008