Heater Maintenance - Graco A Series Instructions-Parts List Manual

Pump
Lubrication
The pumpcrankcase level can bechecked bysighting
should be at the red dot
in window. Oil level can also
into window on the back side of pump. Oil level
be checked using thedipstick.on the top of pump. If oil
detergent oil. Pump capacity is
15.2
ounces (0.45
needs to be added, use an SAE
30
weight, non-
liters).
After that, change oil every
3
months or at
500 hour
Change the initial fill after
a 50 hour running period.
intervals.
Winter Maintenance
If unit is t o be stored under freezing conditions, the
fo!lowing steps must be taken:
@
Remove shroud over pump and motor.
0
Turn unit off and disconnect water supply.
@
Remove the lid on the water reservoir tank(item
177
on page
17).
L
O'Startunit.Triggergunandletrunfo~20seconds.
@ Add two gallons of 5 0 / 5 0 mixed anti-freeze to
0
Let unit r u n for approximately 30 seconds after
reservoir.
anti-freeze has been added, triggering gun on
and off to be sure that the anti-freeze also enters
the bypass line on pump.
Q Be sure that anti-freeze mixturedoes come out of
spray gun to insure that the heater coil also has
anti-freeze
in
it.
t 3 Turn unit off and disconnect power.
e
Wipe off pressure washer with a clean damp
0 Anti-freeze mixture can be saved for future use
cloth.
and reused.
COIL MAlNTENANCE
The illustration below is a sectional cut-away view
caused by mineral deposits from the water and
showing the progressive liming of coils, This is
occurs much faster
in hard water areas. The deliming
procedure requires special caution and. tools to
service person if problems arise.
perform. We recommend that you call your local
waterfromawatersoftenercanbeusedforthewater
In order to lengthen the life of the heatercoils,"soft"
supply. Use Zeolite type water softener if hardness
exceeds
8
grains.
HEATER MAINTENANCE
The gas regulator valve
should
not be adjusted or
tampered with except by authorized service people
who are familiar with natural gas or liquid propane
cock dial" on the top of the unit. This should be left
in
gas. The regulator valve comes standard with a "gas
the ON position at all times.
The electronic ignition device (E.I.D.) is not field
repairable. Attempted repair or tampering with E.I.D.
willvoidwarranties.lnsidetheE.I.D.isa2Amp250V
fuse disconnect power and remove the front lower
fuse (AGC P/N
802-950).
To check or replace this
access cover. The .E:I.D. will now be accessible.
and lift the cover off the lower half of the E.I.D.
Swivel the retaining clips that hold the cover in place
Carefully remove the fuse from the fuse clips to
inspect and replace if necessary.
V
803-010
9