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13–10–613 SP Page 64
CONTROLS TROUBLESHOOTING GUIDE (Continued)
Symptom
Recommended Action
Low reservoir pressure
The ES+ controller will maintain a minimum pressure in the oil reservoir while
in CONSTANT mode
in CONSTANT or in other modes while the blowdown valve is closed. This or
other modes before
occurs only after initially loading the compressor unit. If reservoir pressure
blowdown
drops while the blowdown valve is closed, check for leaks between at the reser-
voir, separator, and connected piping.
Erratic pressures
The sequencing system transmits low–level signal between units to commun–
in SEQUENCE only
icate pressures. Units must be properly grounded to a good ground system,
the communications cable should use only appropriate quality cable, and the
cable should be run in its own conduit.
Compressor cycles
In the sequence mode, the operating system requires all compressors be piped
rapidly in SEQUENCE
directly to receiver, such that all transducers sense the same pressure. Check
mode only
valves or restrictions between compressors and the storage will cause system
instability. Run units in AUTOMATIC mode until the system is corrected.
Error in displayed
Pressure measurement errors are almost always the result of poor zero adjust–
pressure or
ment. This must be done after replacement of a controller or a transducer.
“CHECK XDUCER”
The proper display with all pressure removed is 0 +/–1 psig. The adjustment
while zeroing
procedure will prevent large zeroing errors, and recommend that the transduc-
ers be checked.
Summary of Contents for ELECTRA-SAVER EAYQ E
Page 15: ...13 10 613 SP Page 6 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077 ...
Page 16: ...13 10 613 SP Page 7 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077 ...
Page 31: ...13 10 613 SP Page 22 FIGURE 4 2 FLOW CHART FOR SET UP PROGRAMMING ...
Page 48: ...13 10 613 SP Page 39 FIGURE 4 13 WIRING DIAGRAM 202EAY546 Ref Drawing ...
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