Grindmaster 830 사용자 설명서
American Metal Ware Hot Water Boiler
Page 10
NOTE:
The level control board works on the principle that water is conductive and with some pure water inst
allations, an
increased senseitivity may be required in the level control system. Consult factory if this be the case.
If you still need help, call our service dep
artment at (800)
568-5715
Ext. 3 or (505) 425-4776 (Monday through Friday
,
8 am - 6 pm EST) or an authorized service center in your area. Please have the model number and serial number s ready so that accurate information may be given.
Prior authorization must be obt
ained from Grindmaster Corporation’
s
Technical Services Dep
artment for all warranty claims.
E)
F)
Tank fills with water
,
but heat does not come on.
No water in t
ank, but
heat comes on (heater damage likely).
PROBLEM
IV)
T
rouble Shooting
Auto Refill, Low W
ater Cutof
f, and Dual
Level Control System (continued)
POSSIBLE CAUSE
SER
VICE CHECK
REMEDY
1)
2)
3)
4)
5)
1)
2)
3)
Thermost
at of
f.
Thermost
at inoperative
or out of calibration.
Power relay or cont
actor inoperative.
Low electrode faulty or covered with lime scale.
Dual Level Control faulty
.
Thermost
at and fill
valve connected to wrong terminals on Dual Level Control .
Electrode(s) shorting to ground.
Dual Level Control faulty
.
V
isual.
Jumper across thermost
at
terminals causes heat to come on.
Check for volt
age
(120V AC)
across
coil
terminals.
Jumper from “XL” terminal to met
al
enclosure allows unit to heat.
Jumper from “XL” terminal to “C” does not cause unit to heat.
V
isual
Disconnecting wire (white) from “C”
probe
terminal provides low water heat cutof
f and
tank fill.
Heat comes on with no probe wires (HI, XL, C) connected.
Make sure knob is turned fully clockwise.
Recalibrate thermost
at. If no remedy
, or ther-
most
at does not cycle, replace.
If correct volt
age, replace coil or entire device.
If not correct volt
age, check for loose wires,
improper wiring or other cause.
Clean electrodes. Check wiring. If still no remedy
, replace electrode assembly
.
Replace Dual Level Control.
Thermost
at (brown wire) must be
connected to “HEA
T”
and fill valve (black wire)
to “FILL”.
Replace electrode assembly
. If no
remedy
, check for improper wiring (cut insula-
tion for inst
ance), or electrode tip
s touching
met
al inside t
ank.
Replace Dual Level Control.