Quinny 65040-AB manual Compressor has Shut Down Take Corrective Action

Section VIII - Power$ync II™ Operation

If the controller detects temperatures above the acceptable operating range of the compressor, it will illuminate the appropriate LED on the schematic and display one of the following messages:

NOTICE!

****** COMPRESSOR HAS SHUT DOWN ******

**NOTICE** MOTOR OVERLOAD

TAKE CORRECTIVE ACTION

If there is a motor overload, the LED on the schematic will be illuminated and this message will be displayed.

A)On air-cooled units, this message will be displayed if either the main drive motor or the fan motor experiences an overload shutdown. Open the main electrical control enclosure to determine which overload has tripped.

B)On water-cooled units, this message will indicate a main motor overload or package vent fan motor overload.

The most common cause of a tripped overload is low voltage. If the overload trips while the unit is starting, it may indicate insufficient power available to the facility or incorrectly sized wiring to the compressor. Intermittent tripping may be the result of low voltage caused by variations in incoming power supplies or by other large horsepower motors starting on the same power supply. Intermittent voltage drops are difficult to detect without a recording voltmeter or a Dranitz meter. If it is determined that low voltage is not the cause of the tripped overload, contact your service representative.

If the controller signals the starter to engage and it does not receive confirmation that the starter contacts have closed, one of the following messages will be displayed depending on the type of starter:

NOTICE!

COMPRESSOR HAS SHUT DOWN

MAIN CONTACTOR AUX CONTACTS ARE OPEN

POSSIBLE FAILURE TO CLOSE

NOTICE!

COMPRESSOR WYE CONTACTOR

IS NOT CLOSING

REFER TO YOUR SERVICE MANUAL

NOTICE!

REMOTE STARTER

IS NOT ENGAGING

REFER TO YOUR SERVICE MANUAL

NOTICE!

COMPRESSOR WYE CONTACTOR

IS NOT OPENING

REFER TO YOUR SERVICE MANUAL

Determine the reason that the starter is not responding, correct the problem and repeat the start-up procedure. As with other faults, loose wiring should be the first item checked. If all wiring to and from the controller is tight and wiring to the starter is tight, a faulty starter may be the problem. If the starter is engaged, check wiring to the auxiliary contacts.

Quincy Compressor® - QSD™ 61