Graco A-25 important safety instructions Problem Cause Solution

Models: A-25

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Troubleshooting

Problem

Cause

 

Solution

 

 

 

 

 

Low voltage.

Ensure input voltage is within specifi-

 

 

cations, page 36.

 

 

 

 

 

Poor display connection.

Check cable connections, page 36.

Erratic display; display turns on and

 

Replace damaged cable.

 

 

 

 

 

off.

Display cable damaged or corroded.

Clean connections; replace cable if is

 

 

damaged.

 

 

 

 

 

 

 

Display cable not grounded.

Ground cable, page 37.

 

 

 

 

 

Display extension cable too long.

Must not exceed 100 ft (30.5 m)

 

 

 

Hose display reads OA at startup.

FTS disconnected or not installed.

Verify proper installation of FTS (see

 

 

Operation manual), or adjust FTS to

 

 

desired current setting.

 

 

 

 

 

Poor display connection.

Check cable connections, page 36.

 

 

Replace damaged cable.

 

 

 

 

Display does not respond properly to

Display cable damaged or corroded.

Clean connections; replace cable if is

button pushes.

 

damaged.

 

 

 

Ribbon cable on display circuit board

Connect cable (page 36) or replace.

 

disconnected or broken.

 

 

 

 

 

 

 

 

Broken display button.

Replace, page 36.

 

 

 

 

No hose heat.

Loose hose electrical connections.

Check connections. Repair as neces-

 

 

sary.

 

 

 

 

 

 

Circuit breakers tripped.

Reset breakers (CB1 or CB2), page

 

 

34.

 

 

 

 

 

 

 

 

Hose zone not turned on.

 

 

 

 

 

Press

zone

key.

 

 

 

 

A and B temperature setpoints too

Check. Increase if necessary.

 

low.

 

 

 

 

 

 

 

Failed temperature control module.

Open cabinet. Check if board LED is

 

 

blinking. If not, check power wiring

 

 

connections to ensure module has

 

 

power. If board has power and LED is

 

 

not blinking, replace module, page

 

 

26.

 

 

 

 

 

Low hose heat.

A and B temperature setpoints too

Increase A and B setpoints. Hose

 

low.

designed to maintain temperature,

 

 

not increase temperature.

 

 

 

 

 

Hose temperature setpoint too low.

Check. Increase if necessary to

 

 

maintain heat.

 

 

 

 

 

Flow too high.

Use smaller mix chamber. Decrease

 

 

pressure.

 

 

 

 

 

 

Low current; FTS not installed.

Install FTS, see operation manual.

 

 

 

 

Hose heat zone not turned on long

Allow hose to heat up, or preheat

 

enough.

fluid.

 

 

 

 

 

 

Loose hose electrical connections.

Check connections. Repair as neces-

 

 

sary.

 

 

 

 

 

 

 

18

3A1570A

Page 18
Image 18
Graco A-25 important safety instructions Problem Cause Solution