![background image](http://html.mh-extra.com/html/graco/hydroshield-wabh00/hydroshield-wabh00_instructions-parts-manual_2251562067.webp)
Maintenance
Maintenance
Maintenance
Servicing this equipment requires access to parts which may cause electric shock or other serious injury if
work is not performed properly. Moving parts, such as the isolation valve, can cut or amputate fingers.
• Do not service this equipment unless you are trained and qualified.
• To reduce the risk of injury, follow the
Pressure Relief Procedure, page 30
before checking, servicing, or
repairing any part of the system and whenever you are instructed to relieve the pressure.
• Comply with all local codes and regulations.
To reduce the risk of fire, explosion, or electric shock, before flushing or servicing the system:
• Follow the
Fluid Voltage Discharge and Grounding Procedure, page 29
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
.
• 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 29
.
Routine
Routine
Routine Maintenance
Maintenance
Maintenance
Before performing any maintenance task, prepare the system for service. Follow the
Prepare the System for Service, page 68
Table
Table
Table 4
4
4 Service
Service
Service Interval
Interval
Interval Chart
Chart
Chart
Maintenance
Maintenance
Maintenance Task
Task
Task
Daily
Daily
Daily
Weekly
Weekly
Weekly
Flush the system regularly.
Follow the steps in
Flush the System (Systems without Color Change), page 31
or
Flush the System (Color Change Enabled Systems), page 32
.
Flush before changing fluids, before fluid can dry in the equipment, at the end of the
day, before storing equipment, before repairing equipment.
�
Check for fluid leaks. Follow the steps in
Check for Fluid Leaks, page 68
�
Wipe off any build-up off of the isolation valve components.
�
Check the level of the wash fluid to make sure that it is above the minimum
line marked on the wash fluid bottle. Fill or replace, if necessary. Follow the
Replace the Wash Fluid, page 69
�
Clean the gun. See your gun manual.
�
Perform a pump stall test. Follow the
Pump Stall Test Procedure, page 60
Perform task any time fluid is seen at the weep holes on the isolation fluid pump, or
any time the pump is serviced.
�
Check the bleed resistor. Follow the steps in
Check the Bleed Resistor, page 70
.
For maintenance of the Merkur AA fluid pump, reference manual 312794. See
.
3A8492A
67