Graco WB100, Instructions-Parts List Manual

Page: 58 / 112

Repair
Repair Repair Repair
Prepare Prepare
Prepare the
the
the Gun
Gun
Gun for
for
for Service
Service
Service
Installing and repairing this equipment requires
access to parts that may cause electric shock or
other serious injury if the work is not performed
properly. Do not install or service this equipment
unless you are trained and qualified. To reduce
the risk of fire, explosion, or electric shock, before
flushing the gun:
• Follow the Fluid Voltage Discharge and
Grounding Procedure, page 39 , and turn OFF
(O) the ES On-Off switch before flushing,
checking, or servicing the system and whenever
you are instructed to discharge the voltage.
• Clean all parts with a non-flammable fluid as
defined under Models, page 3 .
• Do not touch the gun nozzle or come within 4 in.
(102 mm) of the nozzle during gun operation or
until you perform the
Fluid Voltage Discharge
and Grounding Procedure, page 39 .
To reduce the risk of injury, follow the Pressure
Relief Procedure before checking or servicing any
part of the system and whenever you are instructed
to relieve the pressure.
• Check all possible remedies
in Troubleshooting, page 51 before disassembling
the gun.
• Use a vise with padded jaws to prevent damage
to plastic parts.
• Lubricate some packing rod parts (2) and certain
fluid fittings with dielectric grease (44), as specified
in the text.
• Lightly lubricate o-rings and seals with non-silicone
grease. Order Part No. 111265 Lubricant. Do not
over-lubricate.
• Only use genuine Graco parts. Do not mix or use
parts from other Pro Gun models.
• Air Seal Repair Kit 24N789 is available. The
kit must be purchased separately. Kit parts are
marked with an asterisk, for example (6a*).
• Fluid Seal Repair Kit 24N790 is available. The
kit must be purchased separately. Kit parts are
marked with a symbol, for example (2a‡).
1. Follow the Fluid Voltage Discharge and
Grounding Procedure, page 39 .
2. Flush the gun. See Flushing, page 42 .
3. Blow the fluid lines dry with air.
4. Relieve the pressure. See
Pressure Relief Procedure, page 39 .
5. Disconnect the gun air and fluid lines at the
isolation system.
6. Remove the gun from the worksite. Repair area
must be clean.
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