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MAINTENANCE
MAINTENANCE
The efficiency and life of your machine is increased by regularly scheduled preventive maintenance.
A well maintained machine gives better results and service. An investment of a few minutes of
daily maintenance will be worthwhile.
The best maintenance you can provide is to keep your machine clean. Components that are not
regularly cleaned and flushed will clog and become inoperative.
Intervals shown in the following schedules represent an average length of time between necessary
maintenance. Maintenance intervals should be shortened whenever your machine is faced with
abnormal working conditions, hard water, or multiple shift operations.
CLEANING
Daily-Every 8 Hours of Operation
1. Turn power switch to OFF.
2. Drain the tank and flush with water.
2. Remove all scrap screens, scrap baskets and pull drain lever to drain water. Clean inside of
tank and flush with clean water. Backflush scrap screens and basket until clean. Do not strike
screens or basket against solid objects.
3. Remove the spray pipes. Remove the end plug from each spray pipe. Flush pipe and nozzles
until clean. Do not strike spray pipes against solid objects. Check bearings in arms to
ensure that they are clean of any debris and do not need replacing. Reinstall spra y pipes.
At the End of Day
1. Drain the machine.
2. Check and clean scrap screens, scrap basket and pump suction screen.
3. Clean the spray arms.
4. Wash inside of machine with fresh water (tank, sides and top).
CAUTION:
!
Do not hose down the exterior of the machine with water.
5. Leave the doors open to aid in dr ying the interior of the machine.
6. Clean the exterior of machine with a mild soap solution.
6. Check detergent and rinse aid additive, replenish if necessary.
7. Report any unusual conditions to your supervisor.
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PREVENTATIVE MAINTENANCE SCHEDULES
Daily Maintenance Requirements
1. Check the chemical supply containers and replenish as needed.
2. Inspect the scrap screens and baskets for bent or damaged parts.
3. Check the spray arm bearings and make sure that arms turn freely.
4. Check pump motor for leaks around shaft.
5. Check thermometers for proper readings.
Weekly Maintenance Requirements
1. Inspect for leaks including all piping and suppl y connections. Tighten or repair as needed.
2. Inspect the door for proper f it and ease of operation.
3. Check the operation of door safety switches.
MAINTENANCE
4. Thoroughly clean any residue from the exterior of machine.
5. Check drain/overflow tube for leaks.
Semi-Annual Maintenance Requirements
1. Inspect all chemical connections and supply tubing for leaks.
2. Check the building drain system and clean as needed.
Yearly Maintenance Requirements
1. Inspect the installation site for cleanliness and an y foreign material around the machine. Clean
as required.
2. Check the overall condition of the machine. Replace any worn or damaged parts.
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MAINTENANCE
DELIMING
Your dishwasher should be delimed regularly as required. This will depend on the mineral
content of your water. Inspect your machine interior for lime deposits. If deliming is required, a
deliming agent should be used for best results. Consult y our chemical supplier for proper type
and procedures.
DANGER:
Deliming solution, rinse agents, or other acids must not come in contact with household
bleach (sodium hypochlorite) or any chemicals containing chlorine, iodine, bromine, or
fluorine. Mixing may cause hazardous gases to form. Consult your chemical supplier.
1. Remove all racks and wares from the machine.
2. Remove chemical pick-up tubes from the containers and place in a catch pan on the floor .
3. Place each tube in a container of fresh w ater and prime the chemical lines for several minutes
to throughly flush chemical from the lines. Leave pick-up tubes out of their containers.
4. Drain the machine and ref ill with fresh water.
5. Spray interior walls with deliming solution and let stand for 5 or 10 minutes depending on
the amount of buildup.
6. Open door and add deliming solution (per chemical supplier’s instructions) directly in
wash tank.
• PP-28 holds 24 US gallons (90.8 Liters) of water.
7. Close doors.
8. Push start button and run an automatic cycle.
9. Repeat steps 3 and 4 if necessary.
10. Drain machine.
11. Open door and inspect interior for mineral deposits. Repeat steps 3-10 if required.
12. Run two (2) additional cycles to flush all deliming chemicals from machine.
13. Drain and refill machine.
14. Replace chemical pick up tubes in containers and prime chemical dispensing system.
15. Deliming process is complete.
Grease
LUBRICATION
Fittings
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There are two lubrication points on the pump assembly
motor. The pump motor should be greased every 100
hours of running time with a high temperature and
high pressure bearing grease. DO NOT over
lubricate. One to two pumps of the grease gun is
sufficient.
Figure 1
Lubrication Points
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