Repair
Repair
Repair
Pressure
Pressure
Pressure Relief
Relief
Relief Procedure
Procedure
Procedure
Follow the Pressure Relief
Procedure whenever you see this
symbol.
This equipment stays pressurized until pressure
is relieved manually. To help prevent serious
injury from pressurized fluid, such as splashing
in the eyes or on skin, follow the Pressure Relief
Procedure when you stop pumping and before you
clean, check, or service the equipment.
1.
Remove power from the system.
2.
Open the dispensing valve, if used.
3.
Open the fluid drain valve to relieve fluid
pressure. Have a container ready to catch the
drainage.
Before
Before
Before You
You
You Start
Start
Start
1.
Flush the pump.
2.
Follow the
Pressure Relief Procedure, page 9
.
3.
Disconnect power to the pump.
4.
Make sure the pump is electrically isolated.
Unexpected operation of the pump can cause
serious injury. Remove the fan cover only after
the motor has been locked out.
Drain
Drain
Drain the
the
the Lubricant
Lubricant
Lubricant
1.
Hold a pail under the drain plug (29) and unscrew
the plug to drain the lubricant. Dispose of the
lubricant properly. Take care, as the lubricant
may be contaminated by the pumped fluid.
2.
Remove the vent plug (30) and flush the pump
housing with a compatible solvent.
Figure 1 Pump Drain (29) and Vent (30)
Remove
Remove
Remove the
the
the Front
Front
Front Cover
Cover
Cover
1.
Drain the lubricant per the instructions in the
previous section.
2.
See Figure 2, page 10. Use a wrench to remove
the bolts (45) and washers (52, 53, if present)
that hold the front cover (16), removing the
top screw and washer (if present) last. Take
the cover off the pump. If the cover is stuck,
gently break the gasket seal with a flat-headed
screwdriver between the cover and the housing.
Pump Model
Wrench size
ST10
and
ST23
10 mm
ST26
13 mm
ST30
17 mm
3.
Remove the front cover gasket (15).
3A3367H
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