Graco HFRL, Руководство по установке и эксплуатации

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Troubleshooting
3A2175Z 51
Troubleshooting
Before performing any troubleshooting procedure:
1. Perform Pressure Relief Procedure on page 40.
2. Turn main power OFF.
3. Allow equipment to cool.
Try the recommended solutions in the order given for
each problem, to avoid unnecessary repairs. Also,
determine that all circuit breakers, switches, and con -
trols are properly set and wiring is correct before
assuming there is a problem.
Light Tower (Optional)
Errors include advisories, deviations, or alarms, so
green will only be on when none of these occur. A yel -
low light can be on at the same time as red (flashing or
solid on) when an advisory exists at the same time as a
deviation or alarm.
Common Problems
Signal Description
Green on only System is powered up and there are
no error conditions present
Yellow on An advisory exists
Red flashing A deviation exists
Red on The system is shut down due to an
alarm occurring.
Problem Cause Solution
General
Display Module completely
dark
No Power Verify AC Power switch is ON
Thrown Breaker Check Machines Breakers and Reset
Loose Connection Tighten 5-pin cable on Advanced Display Module
Bad Display Module Replace Advanced Display Module
No or incorrect amount of
material dispensed from
either side
Ball Valve closed (if Installed) Open tank ball valve.
Tank Empty Add fluid
Tank Clogged Clean tank
Air In Material Prime the machine
Significant material leaking
from pump seal
Pump shaft worn and/or shaft seal
worn
Remove pump shaft assembly and reinstall read
pump rebuild kit
Material dispensed not cor -
rect weight
Specific gravity of one or more of the
two materials has changed since cali -
bration
Run calibration
Check valve malfunction Remove check valve; clean or replace as necessary
Piston worn or broken Replace Piston
Proportioning System
Proportioning pump does not
hold pressure when stalled
Pump piston or intake valve leaking 1. Observe gauges to determine which pump is
losing pressure.
2. Determine in which direction the pump has
stalled by observing which directional valve indi -
cator light is on.
3.
Repair the valve.