User Manual

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6 Removenewpistoncup(s)fromprotectivecardboardpackaging.Setnewpistoncups
ontoretainerplate,thesepartswillsitflatagainsteachother.
7 Press retainer plate with piston cup into cylinder all the way to the piston. The cylinder
canberotatedtoalignthescrewholes.Applythreadlockingcompound(Loctite
®
222)
to retainer screws, torque screws to 10-13 inch-pounds.
8 Removethecylindero-ring(s)fromthebottomofvalveplate(s)andinstallnewo-rings.
9 Inspect leaf valves for damage or wear. NOTE: There is one intentionally “bent” leaf
valve per set. If leaf valves need to be replaced, a complete leaf valve plate can be
ordered. The screws holding the leaf valves are susceptible to breaking which makes
individualleafvalvereplacementverydicult.Completevalveplateassemblies:
 SRC25VPforSRC25units;SRC50VPforSRC50units.
10Checkthatorientationofthevalveplate(s)withportsiscorrectandplaceover
cylinders.
11 Remove old and install new head o-rings in the o-ring grooves on top of valve plate.
12Reinstallheadovervalveplate(s)checkingthatorientationwithportsiscorrect.Torque
screwsto50inch-pounds.
Check that all external accessories such as relief valves
and gauges are not damaged before re-operating product.
TROUBLESHOOTING - ALL UNITS:
Low High Excess Over Won’t
Pressure Pressure Noise Heating Start Possible cause and solution
x x x Filter dirty
Clean or replace
 x x  x x Dirtymuer
Clean or replace
 x     Dirtyvalves
Clean or replace
x Bent/damaged valves
Replace
 x  x   Damaged/worncup
Replace
 x  x   Leakyhose
Fix or replace
 x    x Leakycheckvalve
Fix or replace
x x x Plugged vacuum or pressure line
Fix or replace
    x x Lowvoltage
Inspect power supply*
 x     Leakyreliefvalve
Fix or replace
x x Motor not wired correctly. Check
wiring diagram and line voltage*
* To troubleshoot low voltage, unit can be tried in an outlet closer to the breaker panel. Voltage drop
in longer electrical runs can cause low voltage.