MAINTENANCE
PERFORMER 980060 07/01/02
4-15
NOTE: Lubricating the facing sides of the brass
disks will hold them together on the capillary
tube during installation.
6. Insert the rubber seal and brass disks into the
union fitting, hand tight.
7. Position the capillary bulb in the temperature
manifold as shown in the illustration. When
positioning the capillary bulb, do not allow the
bulb to compress against the support fitting.
8. Tighten the jam nut lightly, about 1-1/2 turns.
9. Examine the capillary union assembly for leaks
and tighten the union fitting just enough to stop
leaks. DO NOT over-tighten.
TROUBLESHOOTING
DO NOT service this unit while it is running. The
high-speed mechanical parts as well as high
temperature components may result in severe
injury, severed limbs, or fatality.
This chapter of the operator’s manual explains
how to look for and repair malfunctions which
may occur.
Intelligent, accurate troubleshooting is based on a
complete and thorough understanding of the
WATER, VACUUM, CHEMICAL, HEAT TRANSFER,
SAFETY and WIRING systems on this unit.
If there is a malfunction occurring in a system which
you do not fully understand, turn back to the
"Operation" section of this manual and review
"Systems".
In addition, prior to proceeding, you can save
time by checking that:
1. The water supply is ON.
2. The engine speed at full throttle is 2400 RPM,
with the diverter valve in the HEAT EX-
CHANGER position.
3. Check that water pump volume is correct. Check
the pump volume with the cleaning tool closed.
Measure the water flow returning to the water
box from the pressure regulator. The flow rate
should be 3.4 GPM. An additional .25 GPM of
water should be flowing through the bypass
manifold orifice, which is adjacent to the water
box. If you block the heat bypass flow, the flow
rate will be 3.65 GPM.
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