Graco 312054J User Manual download pdf (Page 17)

Troubleshooting

312054J 17

(cont.) Inoperative timer With the ignition switch on, check the input

voltage of both the memory (orange) and

the (red) switch wires; if there is not 12

VDC (or greater) repair electric supply. Set

the timer to TEST. Check the output signal

to the solenoid. Connect a meter from the

timer supply to the return. Not to a ground.

(At the timer connector the supply is the

blue wire and yellow is the return), (At the

solenoid connector the supply may be a

black wire and return a white wire). It

should show 12 VDC during the ON cycle

(approx. 45 sec.) and 2 VDC or less during

the OFF period (approx. 45 sec.) If there is

no signal or a constant 12 VDC output,

check lines from the timer to the solenoid

for grounding or breakage; replace timer if

necessary.

Main line broken See Troubleshooting, Main tube line dam-

aged, page 17.

None of the above Using 2500 PSI pressure gauge, check for

pressure at last module in system. The

minimum gauge reading should be 500

PSI. If not, check pressure at pump. Pres-

sure should reach 1000PSI. If it does,

check for blocked, broken or collapsed

main line. Otherwise repair or replace

pump.

No sign of fresh grease at some

lube points

Main line broken See Troubleshooting, Main tube line dam-

aged, page 17.

Air lock in main line Purging Air From the Mainline; Step 7,

page 15.

No sign of fresh grease at one lube

point

Secondary line damaged See Troubleshooting, Secondary line dam-

aged, page 17.

Meter inoperative Replace meter.

Lube point fitting has broken off Remove broken fitting and replace

Main tube line damaged Trapped and broken, rubbed

through

Replace or repair (re-route or protect the

line to prevent the damage from happening

again). Purge with grease to expel air

before connecting new main line into sys-

tem. Be sure to use a tube insert at all main

line connections.

Main line has popped out of fit-

ting

Refit line to the fitting using a new com-

pression sleeve and a tube insert.

Secondary line damaged Trapped and broken, rubbed

through

Replace or repair (re-route or protect the

line to prevent the damage from happening

again).

Secondary line has popped out

of fitting

Refit line to the fitting using a new com-

pression sleeve.

Lube point fitting has broken off Remove broken fitting and replace.

Problem Cause Solution

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Graco 312054J User Manual Page 17

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