Download Read instructions before operating the machine.

MAINTENANCE
CHECK VALVE (SOLUTION OUTLET)
CHEMICAL PUMP
Inspect the check valve whenever doing service on
the chemical pump or if flow problems occur in the
chemical system:
The only repairs which the chemical pump may
require is the replacement of the diaphragm or
check valves. To replace the diaphragm, unscrew
the cover from the body. When replacing the
diaphragm, lubricate the outer edges of the
diaphragm with o-ring lubricant Part #05-008035 and
reassemble. To replace the check valves, unscrew
the check valve caps. Replace the check valves and
reassemble, using new o-rings.
1. Remove the check valve. Be sure the small oring for the seat comes out with the check valve.
2. Remove the seat, using a 5/16" Allen wrench.
3. Check the Teflon seat for debris or wear. Clean
or replace Teflon seat if needed.
4. Clean the poppet and spring, inspect for wear or
damage, and replace as needed.
5. Re-assemble the check valve. Start the seat by
hand, tighten using a 5/16" Allen wrench. DO
NOT over-tighten seat.
DO NOT attempt to re-use o-rings once the check
valves have been removed. See the “Illustrated
Parts Listing” for a parts break-down on the chemical
pump.
8
NOTE: Improper seating of the check valve
poppet, damaged spring or o-rings will cause
poor operation of the chemical system.
6. Lubricate the o-rings with o-ring lubricant
Part #05-008035 and reinstall.
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EVEREST EFI 980197 06/30/04