Power supply, wiring and grounding, Machine installation – Graymills Handi-Kleen PH822-A OMI User Manual
Page 2
 
795-92072
05/08
2
•
Cleaning fluids should have a pH under 12.5.
•
This is a heated system. Always use caution when first 
putting hand into cleaning solution. Higher temperatures 
can cause burns to skin and will damage pump. This 
unit's thermostat has a maximum temperature of 120ºF. 
Do NOT attempt to exceed thermostat setting. 
•
Should cleaning solution become uncomfortably hot 
despite adjusting thermostat to a lower temperature 
and/or the heat light is on continuously, unplug 
machine and discontinue use. For instructions on 
changing the thermostat, please see the Troubleshooting 
section. 
•
If any cleaning solutions are splashed on clothing, change 
promptly and thoroughly wash any body areas which have 
been in contact with solution. Apply lotion. Do NOT 
permit saturated clothing to remain in contact with 
skin. 
•
After extended use, the gas-spring used to assist in 
opening and closing the lid may lose its ability to keep the 
lid open. At the first sign of this, replace the gas-spring 
immediately. (See Spare Parts List) 
• Automatic
Safety
Cover. Since certain soils may be
combustible, e.g., oils, greases. This unit is equipped with 
a fusible safety link cover mechanism designed to support 
the open cover at a slightly forward angle. In the event of 
a fire, the fusible link will melt at 165ºF permitting the 
cover to slam shut, cutting off oxygen supply to the fire. 
(See Spare Parts List) 
•
Failure to keep proper liquid level will result in 
burning out the pump and heater coil, creating a 
potential fire hazard. To help prevent this, this unit is 
equipped with a low liquid level device which will shut off 
the pump and heater. If solution stops circulating and the 
red “FAULT” light becomes illuminated, immediately turn 
off and unplug unit. For instructions on filling the reservoir, 
please see the Troubleshooting section. 
•
Do not leave the unit unattended with parts in the tank 
which would prevent the cover from closing 
completely in the event of a fire. Keep cover closed 
when unit is not in use. If the fusible link breaks, do 
not operate the unit until a replacement link is 
installed. (See Spare Parts List) 
•
Turn heater and pump off when unit is to be idle for 
extended periods (overnight and weekends). 
•
Maximum shelf capacity 150 pounds.
•
Maximum fluid capacity 30 gallons.
POWER SUPPLY, WIRING AND 
GROUNDING 
•
Failure to permanently ground the unit and controls 
before connecting to electrical power can cause 
shock, burns or death. 
•
Install ground and wiring according to local and 
national electrical code requirements. 
•
Install a fused disconnect switch on all power legs near 
the unit 
•
Disconnect and lockout electrical supply before installing 
or servicing unit. 
•
Unit must be properly grounded to prevent electric shock 
hazard. Connect only to three-prong outlet. Should cord 
become cracked, frayed or damaged in any way, it should 
be repaired/replaced immediately by a qualified 
electrician. Never use an extension cord. (See Spare 
Parts List) 
•
The full-load amperage draw for this machine is 12 amps.
MACHINE INSTALLATION
1. Unit is shipped fully assembled. 
2. Place unit on smooth, level surface in a well-ventilated 
area.
3. Close drain valve before filling tank. 
4. Fill tank with 30 gallons of 
aqueous cleaning solution 
according to solution 
manufacturers’ suggested 
dilution instructions. For best 
results, Graymills 
recommends Aquatene 330, 
Super Aquatene 360, or 
Aquatene 571. Maximum 
fluid level is equal to the tops 
of the slots in the baffle 
screen (Right). Fluid level 
must be maintained above 
pump and heater coil. 
Max-Fill Slots
5. Open lid and read warnings on inside left hand portion of
lid.
6. Place stainless steel shelf on mounting ridges inside tank.
Flow-Thru brush rests on shelf.
7. Plug cord into properly-grounded three prong 120V, 60 Hz
single-phase outlet.