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Maintenance
General Service Adjustments
Check Valve (Solution Outlet)
Inspect the check valve whenever doing service on the
chemical pump or if flow problems occur in the
chemical system:
1. Remove the check valve. Be sure the small o-ring
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.
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 and rein-
stall.
48
Chemical Pump
The only repairs that the chemical pump may require
are the replacement of the diaphragm, plastic disk or
check valves. To replace the diaphragm and plastic
disk, disconnect hoses and unscrew the cover from the
body. When replacing the diaphragm, lubricate the
outer edges of the diaphragm with o-ring lubricant and
reassemble. To replace the check valves, unscrew the
check valve caps. Replace the check valves and reas-
semble, using new lubricated o-rings.
DO NOT attempt to re-use o-rings once the check
valves have been removed. See the "Illustrated Parts
Listing" for a parts breakdown on the chemical pump.
86352170 EVEREST
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