Quincy Compressor QED 650, Инструкция по эксплуатации и техническому обслуживанию, Страница: 91 / 99

7 Problem solving
7.1 Problem solving
Valve on inlet collector
Attention
Use only authorized parts. Any damage or malfunction caused by the use of unauthorized
parts is not covered by Warranty or Product Liability.
Apply all relevant
Safety precautions .
Before carrying out any maintenance or repairs on the dryer, stop the dryer and switch off
the voltage.
Open the isolating switch to prevent an accidental start.
Isolate the dryer from the air net and depressurize by opening valve (5) on inlet collector
(6).
Faults and remedies (general)
Condition Fault Remedy
- Pressure dew-point too high Air inlet temperature too high Check and correct; if necessary,
install a pre-cooler
Ambient temperature too high Check and correct; if necessary, draw
cooling air via a duct from a cooler
place or relocate dryer
Air inlet pressure too low Increase inlet pressure
Dryer capacity exceeded Reduce air flow
Shortage of refrigerant Have circuit checked for leaks and
recharged
Refrigerant compressor does
not run See below
Evaporator pressure too high See below
Condenser pressure too high See below
Automatic drain system
clogged Have the system cleaned
- Condenser pressure too high
or too low on air-cooled dryers Fan control switch out of order Replace
Fan or fan motor out of order Check fan/fan motor
Ambient temperature too high Check and correct; if necessary, draw
cooling air via a duct from a cooler
place or relocate dryer
Condenser externally clogged Clean condenser
- Compressor stops or does not
start Electric power supply to
compressor is interrupted Check and correct as necessary
Instruction book
90 2920 1818 00