Prepare The System For Service; Check For Fluid Leaks; Pressure Relief Procedure; Flush The System (Systems Without Color Change) - Graco HydroShield WABH00 Instructions - Parts Manual

Maintenance
Prepare the the System System for
Prepare Prepare the System
1. Discharge the voltage in the system. Follow
the Fluid Voltage Discharge and Grounding
Procedure, page 29.
2. Flush the system. See
(Systems without Color Change), page 31
Flush the System (Color Change Enabled
Systems), page 32.
3. Relieve the pressure in the system. Follow the
Pressure Relief Procedure, page
4. Press the Stop button
interface and unplug the power cord (Y).
5. Service the component or perform the
maintenance task.
Check Check Check for for Fluid for Fluid Leaks Fluid Leaks Leaks
Check for fluid leaks daily.
NOTICE
NOTICE NOTICE
Any fluid leaking or pooling inside the system can
cause the system's voltage to lower below normal
operating voltage. Low system voltage can cause
arcing that damages system components. Clean
and dry leaks.
1. Prepare the isolation system for service. Follow
the steps in Prepare the Isolation System for
Service, page 90.
2. Use a flat blade screwdriver to open the isolation
cabinet door.
3. Slide the electrostatic shield (82) up to remove.
4. Slide the electrostatic shield (12) to the left to
remove.
5. To remove the isolation valve cover (99), loosen
the top and bottom screws (99a).
6. Inspect the following locations in the isolation
cabinet:
• Connection to the fluid outlet hose (E) and the
hose connection to the fluid filter (131) inside
the AA system.
• Inlet valve (F).
• Isolation valve (G).
• Wipe any build-up off of the isolation valve
components (211, 222).
Fluid build-up on the isolation valve
components can cause seal damage that
results in fluid leaks.
• Check the level of the wash fluid. The level
should be above the minimum line marked on
68
for Service Service
for Service
Flush the System
30.
on the control
NOTICE NOTICE NOTICE
the wash fluid bottle. Leaking isolation valve
seals can cause the wash fluid level to change.
• Connections to the isolation fluid pump (K) and
the inlet at the bottom of the Merkur AA fluid
pump (L).
• Fluid weep hole (WH). If the fluid seal has
or
broken, fluid eventually fills up behind the
piston and causes fluid to leak out of the weep
hole on the left.
Figure 28 Inspect for Fluid Leaks
Figure 29 Wipe Off Isolation Valve Components
7. Inspect the fluid hose (HW). Check for any
leakage or bulges in the outer cover which may
indicate an internal leak.
8. Inspect the gun for fluid leaks. See your gun
manual.
3A8492A