10
TRAC 878 TRAYWASHER
MAINTENANCE REQUIREMENTS
This section is intended for qualified service and/or
maintenance technicians.
The following maintenance should be conducted
quarterly:
1. Remove and clean the strainer screens on water
and steam lines. If the screens cannot be cleaned,
replace.
2.
Inspect the condition of the fill solenoid valve seats
and diaphragms. Replace as necessary.
3. Inspect drain 0-Rings for leakage. Replace where
necessary.
4. Adjust conveyor chain tension using adjustment
bolts located at machine entrance chute.
MAINTENANCE PROCEDURES
Solenoid Valve Disassembly (SK-5825)
1. Disconnect the power supply to the machine.
2.
Turn off the water supply.
3. Remove cap on top of the coil. Remove the coil.
4. Remove the 4 hex bolts and lift bonnet from valve
body. Note positioning of spring and plunger.
5. Remove main piston.
6. Inspect for dirt, wear or lime build-up. Clean or
replace as required.
7. Reassemble in reverse of disassembly.
Line Strainer Disassembly
1.
Shut off water supply.
2. Remove large hex nut on bottom of strainer body.
3. Remove strainer screen. Inspect and clean or
replace as necessary.
4.
Reassemble in reverse of disassembly. Water flow
must be same direction as arrow on line strainer
body. Use new gaskets to insure a tight seal.
Pump Disassembly
1. Before disassembling pump ensure there are no
obstructions in the pump intake by removing and
cleaning the suction strainer (inside tank).
PART 5 MAINTENANCE & REPAIR PROCEDURES
®
TRAC 878 Technical Manual 2018
www.insingermachine.com 800-344-4802
2. Remove the pump motor and impeller adaptor by
removing the 4 hex bolts attaching them to the
pump housing.
3. Repair or replace the pump parts as required.
4. Reassemble in reverse of disassembly.
Final Rinse
The final rinse is actuated by a photo-eye located on
the entrance chute (not used on machines with the
security package option). As a tray passes the photo-
eye the beam is broken. The Final Rinse timer (P/N
DE7-27) will energize the final rinse solenoid. The
final rinse water will then flow.
The Energy Saver timer (P/N DE7-28) is also reset
keeping the machine running.
Both timers are adjustable by turning the
potentiometer located on the timer board. The final
rinse timer is adjustable between 0-60 seconds.
The energy saver timer is adjustable between 0-300
seconds.
NOTE:
It is not necessary to remove the
pump housing from the machine to
disassemble the pump.
Line Strainer Assembly
