Troubleshooting - Graco EM5 238457 Instructions-Parts List Manual

Relieve the pressure before you check or repair the
meter. Be sure all other valves and controls and the
pump are operating properly.
Problem
Display does not activate or is
showing unintelligent
characters.
Battery icon continually
blinks.
Slow or no fluid flow
Displayed dispensed amount
is not accurate.
Oil leaks from swivel, swivel
boot, or plastic housing.
Oil leaks from where fluid out-
let tube connects to housing.
Automatic nozzle leaks.
NOTE: It is important to dis-
tinguish between the two
causes of this problem. A
new nozzle will not correct a
fluid leak caused by a faulty
valve.
Oil leaks from where fluid out-
let tube connects to housing.
16 308487

Troubleshooting

Cause
Battery is defective or dead.
Electronic control is malfunctioning.
Battery is low.
Filter is clogged.
Pump pressure is low.
Shut-off valve is not fully open.
Foreign material is jammed in the
metering element.
Unit needs to be calibrated for the
fluid that is being dispensed.
Swivel (3) connection to meter is
loose.
Hose connection to swivel (3) is
loose.
Outlet tube or sealing nut or street
elbow is loose. See Parts Drawing
on page 21.
Automatic nozzle (5b, 6b, or 7b) has
*
a damaged seal .
Valve (16) has damaged or
obstructed seals.
*
Some fluid weepage is possible in
applications where thermal expansion
of fluid is possible.
Outlet tube (5a, 6a, or 7a) or sealing
nut (5c, 6c, or 7c) or street elbow
(6d or 7d) is loose or damaged.
Sealing nut (5c, 6c, or 7c) is ori-
ented the wrong way.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
Replace the battery. See Replacing
the Battery on page 18.
Replace the entire unit.
Replace the battery. See Replacing
the Battery on page 18. If the
problem remains, contact your Graco
distributor for repair or replacement.
Clean or replace the filter. See
Replacing the Filter on page 18.
Turn up the pump pressure.
Open the shut-off valve.
If the problem remains, contact your
Graco distributor for repair or re-
placement.
Calibrate the meter for the fluid that is
being dispensed. See Calibrating
the Meter on page 13.
Torque the fitting to 20 to 25 ft-lb
(27 to 34 N.m).
Apply sealant to threads of hose, and
tighten the connection. See step 9
in Installation Procedure on
page 5.
Check outlet tube and/or sealing nut
for tightness and proper assembly.
Also, make sure the PTFE seal on
the sealing nut is facing the valve
housing.
Replace the nozzle. See Replacing
the Automatic Nozzle on page 19.
Replace or clean valve stem and
o-rings. See Servicing the Valve on
page 19.
Check outlet tube, sealing nut, and
street elbow for looseness or dam-
age, and tighten or replace.
Make sure the PTFE seal on the
sealing nut is facing the surface
against which it is tightened.
Solution