8
P545 Series Electronic Lube Oil Control Product/Technical Bulletin
Setup and Adjustments
The anti-short cycle delay timer is factory-set to
100 seconds. For a different delay, move the jumper at
P1 to the desired position. (See Figure 13, Inset B.)
Note:
If the jumper is removed, the P545 control
operates at the default delay of 100 seconds.
R39
240 120 L2
M2
M1 NOA CMA NCA
R39
W1
W2
P1
P2
Anti-short Cycle
Delay Setting
Cut and
discard resistor
R39 when installing
R310AD switch.
Inset A
Correct
Incorrect
0
3
5
6
5
10
0
0 seconds
65 seconds 100 seconds
35 seconds
Inset B
0
3
5
6
5
10
0
0
3
5
6
5
10
0
0
3
5
6
5
10
0
0
35
65
10
0
12
01
10
12
_1
3.
cd
r
Differential Oil Pressure
Switch
Connection
Figure 13: Terminal Designations and Jumper Positions for Anti-short Cycle Delay
Operating Status
Front panel LEDs display the operating status of the
system and assist in troubleshooting (see Table 2).
Status conditions are as follows:
•
Green (RUN) LED only:
The compressor
contactor is energized, and the system’s net oil
pressure is at or above the opening point of the
P400 switch.
•
Green (RUN) and Yellow (TIMING) LEDs:
The
compressor contactor is energized, but the lube oil
pressure is below the opening point. Timing circuit
is active.
•
Yellow (TIMING) LED only:
Power to the control
has been interrupted and restored before the
anti-short cycle delay has elapsed. The
compressor contactor remains de-energized until
the anti-short cycle delay is complete, and then
restarts automatically.
•
Red (LOCKOUT) LED:
The P545 control has
de-energized the compressor contactor (lockout
condition), because it detected a lubrication
problem at the compressor.
Electrical Checkout Procedure
Use the following procedure to test the P545 control
during initial installation and maintenance:
1. De-energize the supply voltage to the control and
the compressor circuit. Make certain that any
disconnect switches or circuit breakers feeding
the circuit are open.
!
WARNING: Risk of Electric Shock.
Disconnect the power supply before making electrical
connections. Contact with components carrying
hazardous voltage can cause electric shock and may
result in severe personal injury or death.
AVERTISSEMENT: Risque de décharge
électrique.
Débrancher l'alimentation avant de réaliser
tout branchement électrique. Tout contact avec des
composants conducteurs de tensions dangereuses
risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
