19
Troubleshooting Guide
⚠ WARNING
Read all safety information found in this manual and in the Material Safety Data Sheets (MSDS)
for any refrigerants used with this machine prior to performing any service on this machine.
SYMPTOM: Machine will not start, no sound when power switch turned ‘On’
CAUSE SOLUTION
Power cord not plugged in, or no power in outlet Check power cord, try dierent outlet
Machine in High Pressure Shuto See symptom below
Motor in Thermal Overload Allow motor to cool down
SYMPTOM: Machine tries to start, makes humming/buzzing sound
CAUSE SOLUTION
Low voltage at source outlet Try dierent power source outlet
Voltage drop in extension cord See Extension Cord sizing guidelines on Page 4
Too much back pressure on compressor Try starting the machine with the Input Valve closed
to reduce back pressure on compressor
SYMPTOM: Machine pumps into high pressure shuto
CAUSE SOLUTION
Valve on machine or recovery cylinder not fully
opened
Check that both valves on machine are fully open
(pointing upward);
Check that the valve on the recovery cylinder is fully
opened
Restriction in output hose
- See Tip # 1 on Page 14
Check hoses for any blockage;
Remove any core depressors
SYMPTOM: Pumps liquid slowly
CAUSE SOLUTION
Flow restrictions on input side of machine
- See Tip # 2 on Page 15
Use 3/8” hoses;
Remove “Schrader” valve cores and core depressors
Input Valve on machine not fully open Check that the blue Input Valve on machine is fully
open (pointing upward)
Trapped liquid in system
- See Tip # 2 on Page 15
Cycle system compressor for a few seconds to move
trapped liquid to another area;
Check for condensation on system, and apply heat
as needed;
Check for condensation at hose ttings, and apply
heat as needed
G5TWIN OPERATION MANUAL
© 2016 APPION INC. - ALL RIGHTS RESERVED
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