Hypertherm HT2000 Water Muffler - Manual (Page 22)

OPERATION & MAINTENANCE
HT2000/MAX200
Water Muffler
Instruction Manual
Page 3-3
MAINTENANCE
To maintain the HT2000/MAX200 Water Muffler System, you must periodically
disassemble the Water Muffler and inspect, clean, and/or replace components as
required. In the event the pump does not turn on, you must determine if the pump, or
the pump contactor is at fault, or the 120VAC pump contactor control signal is
missing.
Pump Unit
If the pump is faulty and requires maintenance, refer to the maintenance instructions
for the water muffler pump in the Appendix at the back of this manual. Pump mainte-
nance also includes inspecting all hoses and connections and replacing as needed.
The suction filter/strainer should also be checked and cleaned periodically.
Suction Filter/Strainer
To clean the suction filter/strainer, remove the screw and the plastic cover at the
bottom (see Figure 2-2). After cleaning the filter/strainer, replace the cover and
screw it back on.
Pump Contactor
If the pump contactor or 120VAC relay coil is defective, contact an experienced
electrician to perform the maintenance.
Pump Contactor 120VAC Control Signal
If the 120VAC control signal to the pump contactor is missing, refer to Figure 2-3.
Refer also to the wiring diagrams in the HT2000 Instruction Manual IM207 (P/N
802070) or the MAX200 electrical schematic provided with the MAX200 Service
Manual IM-162 (P/N 801620) to locate the missing control signal.
Nozzle Assembly
If the nozzle assembly is faulty, refer to the Removal and Replacement Procedures
to remove parts for cleaning and replacement.