Operating Guide

Maintenance
34 3A6419B EN
3. Perform a power flush. See Cleanup
with Power Flush Valve, page 25.
4. Inspect for leaks. If leaks occur, perform
Pressure Relief Procedure, page 14,
then tighten all fittings and repeat step 3.
Pump Repair
When pump packings wear, paint will begin
to leak down outside of pump. Purchase a
pump repair kit and install according to
instructions provided with kit, before your
next job. See ProXChange Pump Parts
List, page 49, or consult a Graco/MAGNUM
authorized retailer, distributor, or service
center.
Each time the pump kit is replaced, check
pump inlet and outlet valves for wear or
damage. Replace if worn or damaged.
Always replace inlet and outlet valves every
second time the pump kit is replaced.
Pump Removal
Remove airless hose, suction tube, and drain
tube. Always perform Pressure Relief
Procedure, page 14 before starting any
pump repairs and unplug the sprayer.
1. Unplug the sprayer from the power
source.
2. Pull tabs on sides of the easy access
door towards you while pushing the
entire door up.
3. Now lift the door so that it swings out of
the way.
4. Slide pump assembly off the mounting
pins.
High-pressure spray is able to inject toxins
into the body and cause serious bodily
injury. Do not stop leaks with hand or rag.
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