Frick QUANTUM - Page 104

S90-010 O FRICK
®
QUANTUM™ COMPRESSOR CONTROL PANEL
Page 104 OPERATION
Key
Differential Pressure = 0 if Discharge > Oil
= Oil – Discharge if Oil is greater than Discharge
Differential Setpoint = 0 if pump type is Prelube or No Pump
= 5 for Cycling or Demand Pump
= 20 for Full Time pumps
Slide Valve Setpoint = Highest Allowable Slide Valve position to start (10% default)
Delay Timer = 15 sec. for Prelube pumps
= 5 sec. for Cycling, Demand and Full Time
= 0 sec. for No pump
Pump Status = if Prelube - - Pump is Off
= if Full Time - - Pump is On
= if Cycling or Demand
-- Pump is Off if [Discharge – (1.4
k
* Suction)] > 45
-- Pump is On if [Discharge – (1.4
k
* Suction)] < 35
A is from the main program loop B is to the main program loop
OIL PUMP STARTING LOGIC
(Demand Pump)
Is [Discharge
- (1.4
k
*
Suction)] >
45?
Yes
No
No
A
Compressor Start
Signal Given
Is Slide
Valve
position <
Setpoint?
Is Oil
Logging
Enabled?
Pump On
Yes
Is Oil
Logging
Delay > Oil
Log
Setpoint?
Yes
Shutdown
Compressor
On
B
No
Pump On
No
Is [Discharge
- (1.4
k
*
Suction)] <
35?
Yes
No
Pump Off