Storage & Maintenance; Specific Maintenance; Winterizing - Mi-T-M THE JOB PRO JP-3003-3MKB Operation Manual

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STORAGE & MAINTENANCE

SPECIFIC MAINTENANCE:

ENGINE: The engine instructions that accompany your unit detail specific
procedures for maintenance of the engine. Following the engine manufac-
turer's recommendations will extend engine work life.
PUMP: The pump oil must be changed after the first 25 hours of operation.
Once the initial oil change hasbeen completed, it is recommended the oil
be changed every 3 months or 250 hour intervals. If oil appears dirty or
milky, changes may be required at a greater frequency. Use Mi-T-M pump
oil #AW-4085-0016 and fill only to the center of the oil sight glass. DO NOT
OVERFILL!
NOZZLES: Water flow through the spray nozzle will erode the orifice, mak-
ing it larger, resulting in a pressure loss. Nozzles should be replacedwhen-
ever pressure is less than 85% of the maximum. Thefrequency of replace-
ment will depend upon such variables as mineral content in the water and
number of hours the nozzle is used.
QUICK COUPLERS: There is an o-ring seal inside the female quick coupler.
This o-ring will deteriorate or, if the unit is allowed to pump without the high
pressure hose or nozzle attached, the o-ring may be blown out occasionally.
Simply insert a replacement o-ring to correct the leak. (Additional o-rings
can be purchased from your dealer.)

WINTERIZING:

For storage and transportation purposes in subfreezing ambient tempera-
tures it will be necessary to winterize this unit. This unit must be protected
to the lowest incurred temperature for the following reasons:
1. If any part of the pumping system becomes frozen; excessive pressure
may build up in the unit which could cause the unit to burst resulting in
possible serious injury to the operator or bystanders.
2. The pumping system in this unit may be permanently damaged if frozen.
FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
If you must store your unit in an area where the temperature may fall below
32°F, you can protect your unit by following the procedure outlined below.
1. Gather the following items:
a. Two 5 gallon containers.
b. One gallon of antifreeze. (Mi-T-M recommends an environmentally
safe antifreeze.)
c. Water supply.
d. Three foot hose, 1/2-3/4 I.D. with a 3/4 inch male garden hose fitting.
2. Procedure:
a. To start winterizing, unit must be run and primed according to the
"Start-up Procedures" listed on page 14.
b. After running and priming, shut off the unit and water supply.
c. Relieve system pressure by pointing the trigger gun in a safe direction
and squeezing the trigger until water flow ceases to exit the nozzle.
d. Lock the trigger gun in an OFF position and remove the nozzle.
e. Remove the water supply hose from the unit and attach the 3 foot hose
securely to the inlet connection.
f. Shut off the detergent injector if applicable.
g. Fill one 5 gallon bucket with water.
h. Holding the 3 foot hose in an upright position, completely fill the hose
with water. Then plug the hose outlet with your thumb or finger. Place
the plugged end into the 5 gallon bucket of water.
i. Start the unit. Trigger the gun several times until all the air is worked
out of the system (unit is primed). It may be necessary to adjust the
Job Pro JP-Series Operator's Manual