Section 4
SUPERVISOR
15
4.11 TROUBLE INDICA TION SETPOINTS
CONDITION/DISPLAY CAUSE
P1 High Discharge Pressure Shutdown Default is 135 psig (9.3 bar), factory settable for
HIGH PRESSURE P1 high pressure machines.
50 --- 200 psig (3.5 --- 13.8 bar)
Machine will shut down and must be cleared
and reset by pressing ON/OFF once before
restart is possible.
P1 High Discharge Pressure Prealarm Indicates at 98% of Max Press P1.
HIGH PRESSURE P1
F ailure to Run, P1 Pressure Loss Since no run contact is used to indicate run
PRESSURE LOSS status, the Supervisor examines P1 pressure
to see if a minimum of 14.5 psig (1 bar) is being
produced when the RUN output is energized.
Reading is overridden for 1 minute at startup.
Low Oil Pressure P3 Shutdown Min Press P3 is factory preset at 10 psig (.7 bar).
(Injection Oil Pressure) Factory adjustable 3 --- 145 psig (.2 --- 10 bar).
LOW PRESSURE P3 Requires clearing of shutdown by pressing
ON/OFF once to reset.
Low Oil Pressure P3 Prealarm Set for 5 psig (.3 bar) above Min Press P3. Not
LOW PRESSURE P3 latching.
High Temperature T1 Shutdown Pre---programmed shutdown at 235_F (113_C).
(Compressor Discharge Temperature) Requires ON/OFF reset to clear.
HIGH TEMPERATURE T1
High Temperature T1 Prealarm Pre---programmed indication at 225_F (107_C).
HIGH TEMPERATURE T1 Not latching.
High Temperature T2 Shutdown Pre---programmed shutdown at 235_F (113_C).
(Injection Oil Temperature)
HIGH TEMPERATURE T2
High Temperature T3 Shutdown Separate RTD controller board provides
(Dry---side Discharge Temperature) a digital input at J1/11---12. Preset at
HIGH TEMPERATURE T3 235_F (113_C).
High Temperature T4 Shutdown Second channel of RTD controller board
(Tandem Interstage Temperature) provides a digital input at J1/13---14. Preset
HIGH TEMPERATURE T4 at 235_F (113_C). (Note: J1/13---14 must be
jumpered if not a tandem compressor).
P1 --- P4 Shorted Sensor Shutdown Signal voltage > 4.82 volts (196 psig/13.5 bar).
SHORT CIRC Px SENDER
P1 --- P4 Open Sensor Shutdown Signal voltage < 0.15 volts.
OPEN CIRC Px SENDER
T1 --- T2 Shorted Sensor Shutdown Resistance < 81 ohms (---45 C).
SHORT CIRC Tx SENDER
T1 --- T2 Open Sensor Shutdown Resistance >176 ohms (200 C).
OPEN CIRC Tx SENDER
Inlet Filter Maintenance Required Vacuum Sw itch connected to J1/5---6 and
AIRFILTERMAINTRQD presetfor22”WC.Indicateswheninlet
filter is too dirty for proper air flow. Not
latched and not a shutdown condition.
Separator Maintenance Required Calculated: P1 --- P2 --- 2 psig (.14 bar)
SEPARATOR MAINT RQD Preset to warn at 10 psig. Warnings will
occur in unloading/unloaded states and
should be ignored. Only valid at full load
condition. Not latched and not a shutdown
condition.
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