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Check Valve (Outlet)
Inspect the check valve when rebuilding the chemical
pump or as needed. Remove and disassemble the
check valve. Check the Teflon seat for debris or
abnormal wear. Clean or replace seat if needed.
NOTE: Improper seating of the check valve poppet,
damaged spring, or o-rings will cause poor operation
of the chemical system.
For the procedure, see the "General Service Adjust-
ments" section in this manual for details.
Chemical Pump
Rebuild the chemical pump every 500 hours. This
involves changing the diaphragm, plastic disk, and
check valves.
For the procedure, see the "General Service Adjust-
ments" section in this manual for details.
NOTE: Inspect chemical inlet tube strainer daily.
Pressure Regulator
Lubricate the o-rings every 100 hours. Use o-ring lubri-
cant.
For the procedure, see the "General Service Adjust-
ments" section in this manual for details.
Vacuum Hoses
To assure maximum hose life, we recommend that the
hoses be washed out with clean water at the end of
each working day.
High Pressure Solution Hoses
Inspect your high pressure solution hoses for wear after
the first 100 hours of use. Inspect every 25 hours there-
after. If hoses show any signs of damage or impending
rupture, replace the hose.
DO NOT attempt to repair high pressure hoses!
Repairing high pressure hoses may result in severe
burns and serious injury!
All high pressure solution hoses must be rated for 3000
PSI at 250°F. Thermoplastic hoses do not meet these
specifications and should not be used. Severe burns
and injury may result if the hoses do not meet these
requirements. Pressure wash hoses must be rated at
4000 PSI.
Optional Waste Pump-Out
At the end of each work day, make certain that you
remove any debris or sediment which may be inside the
waste pump by pumping fresh water through the pump.
Engine Coolant Replacement
The coolant should be replaced every 2 years. This
coolant is an integral part of the heating system and
needs to be maintained as any other working part of the
system. We recommend that this procedure be accom-
plished by the following steps.
Draining Coolant:
1. Add 5/16" hose onto the radiator drain petcock.
Turn counter clockwise to open and drain coolant.
Be sure that used coolant is collected in a proper
container and disposed of in accordance with local
laws.
2. After draining is complete, close the radiator
petcock.
Replacing Coolant:
1. Fill radiator with 50/50 anti-freeze water mix.
2. Start unit and run on low speed.
3. As the unit warms up, maintain a full radiator with a
50/50 mix.
4. Open petcock slightly on helicoil to allow any
trapped air to escape. When coolant runs out of
helicoil, close petcock.
5. Top off radiator with 50/50 coolant mix.
6. Re-install radiator cap.
7. Shutdown unit.
8. Check radiator overflow bottle. Add coolant to
proper "cold" level.
86352170 EVEREST
Maintenance
47
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