Maintenance
5
Machine Maintenance
Belt Tension, Spray Tip, Flushing , Storage
CAUTION:
DO NOT RUN PUMP WITHOUT
WATER, AS THIS WILL CAUSE DAMAGE TO
THE PUMP AND VOID WARRANTY.
5. When clean water flows from the gun, turn switch
to the “OFF” position.
6. Reinstall spray tip.
7. With the gun assembly in hand, turn on the switch.
On trigger gun models hold the trigger gun valve
in open position.
8. When clean water flows from the gun, turn switch
to the “OFF” position.
9. If freezing conditions may exist, refer to
“STORAGE” section.
10. Turn off and disconnect the water supply.
Disconnect elctrical supply.
1. Correct belt tension will allow a 1/64- inch
deflection for each inch of span between pulley
centers with a 6-pound force applied in the middle
of the span.
EXAMPLE: A 6-pound force applied at the middle
of an 8 inch span should produce a deflection of
8/64 inch or 1/8 inch.
2. Belts can be tightened or loosened by loosening
the nuts holding the pump assembly to the motor
mount. Then tighten or loosen
the j-bolt on the motor mount. Retighten the pump
assembly after the desired tension is reached.
1. Remove the spray tip from the gun assembly.
2. Blow out debris with compressed air from the
outside in. Any debris remaining in the inlet side
of the nozzle should be cleaned out. If lime or
chemical scale is present in the inlet side, the
nozzle may be soaked in descaling solution or
replaced. If the tip is worn, replace with one
specified in the GENERAL section of
MODEL
SPECIFICATIONS
or
MODEL
EXPLODED
VIEW
.
3. Before replacing spray tip flush the machine per
“FLUSHING”.
4. Reinstall Spray tip to gun assembly.
1. Connect machine to a pressurized water supply
meeting the requirements specified in the
GENERAL section of the
MODEL
SPECIFICATIONS
.
2. Turn on the water supply.
3. Remove the spray tip from gun assembly.
4. With gun assembly in hand, start engine. On
trigger gun models hold the trigger gun valve in
open position.
05-17-06 Z08-027666
1
Supersedes 02-16-01 Z08-027666
MACHINE
MAINTENANCE
Gas Engine Driven Cold Water Cleaners
DEFLECTION
SPAN
SPRAY TIP MAINTENANCE
1. Rinse the chemical line by inserting the screen
into a container of clear water and open the
metering valve 1 minute to clean it of any
remaining residue. Be sure the chemical metering
valve is closed when finished.
2. Disconnect the water supply.
3. Remove the spray tip nozzle from gun assembly
and wire to machine.
4. Attach an air chuck to the air valve stem on the
pump assembly. With the trigger gun in the open
position, apply air until a mixture of air and very
little water is coming from the gun wand .
5. Fill a 1-gallon container with Ethylene Glycol type
antifreeze. Minimum should be a mixture of ½
antifreeze and ½ water strength before each use,
as the antifreeze will dilute with use.
6. Install a 2-ft garden hose to the water inlet. Insert
the other end into a container of antifreeze solution.
7. With the gun assembly in hand, turn on the switch.
On trigger gun models hold the trigger gun valve
in open position.
8. Turn off the switch just prior to running out of
antifreeze mixture.
9. Disconnect gun and hose.
10. Place machine and battery in a dry place protected
from weather conditions.
STORAGE
FLUSHING