PCX5200 User’s Manual Chapter 4
4-7
10. Replace the pump; 1) tighten the captive screw; 2) reconnect the electrical
connection.
11. Reconnect the tubings to the pump head (stabilize the outlet check-valve with a 1/2˝
wrench when tightening the fitting to prevent the check-valve from moving).
13. Relocate the reservoir and turn on the gas. Start the PCX5200 and prime the pump.
1. Follow steps 1–4 from the Cleaning Check-valves section.
2. To prevent the internal components of the valve from falling out upon removal, keep
the pump head in its normal position when removing the inlet check-valve; turn the
pump head upside down when removing the outlet check-valve. Remove the check-
valves with a 1/2˝ wrench (counter-clockwise). After removal, keep the valve oriented
so the translucent washer faces upwards.
1. Remove plastic cover.
2. Insert the new inlet check-valve into the pump head and tighten by hand until just
finger-tight. Tighten with a 1/2˝ wrench 1/8 to 1/4 turn more. Do not overtighten!
The sapphire seats may crack.
3. Turn the pump head upside down; insert the new outlet check-valve into the pump
head and tighten by hand until just finger-tight. Tighten with a 1/2˝ wrench 1/8 to 1/4
turn more. Do not overtighten!
4. Reassemble the pump head and wash system as shown in Figure 4-1. Hold the pump
assembly firmly in place and reinstall it on the pump, in line with the axis of the
piston; do not tilt the pump head sideways.
Removing
Check-valves
Installing New
Check-valves
To Next Page