18
TROUBLE
POSSIBLE CAUSE
REMEDY
Contactor chatters.
Incorrect supply voltage.
Dirty or worn contactor
points.
Weak coil.
1.
2.
3.
Check to see that it matches
it with coil contactors.
Clean or replace contactor.
Replace with correct voltage
coil.
1.
2.
3.
15 lbs. safety valve blows off
prematurely.
Pressure set too high.
Pressure gauge reads incor
-
rectly.
Mineral build-up or dirt on
seat of valve.
Weak spring valve.
1.
2.
3.
4.
Readjust.
Replace.
Clean.
Replace valve.
1.
2.
3.
4.
Boiler build up to pressure, shuts
down and fails to come on.
1. High limit switch set too
low or
operating pressure control
switch set too high.
1.
2.
Follow instructions for re
-
adjusting, See (
page 7
), or
replace if defective.
1.
Cold water condenser does not
function.
1. Main water line shut off.
Thermostat defective.
Tighten coil nut.
Check solenoid coil for conti
-
nuity, if open replace.
1.
2.
3.
4.
Turn on.
Replace if defective.
Tighten coil nut.
Check coil for continuity, if
open replace.
1.
2.
3.
4.
Airvent leaking.
1. Not closing.
1.
Replace.
1.
Contactor chatters.
Low voltage.
Defective or incorrect coil.
1.
2.
Check voltage condition.
Check momentary voltage
dip during starting. Low
voltage prevents magnet
sealing. Check coil voltage
rating.
Replace coil, rating of coil
must match the line voltage.
1.
2.
Welding or freezing.
1. Abnormal inrush of cur
-
rent.
Low voltage preventing mag
-
net from sealing.
Short circuit.
1.
2.
3.
Check for grounds or shorts
in system.
Correct voltage condition.
Remove short fault and
check to be sure fuse or
breaker size is correct.
1.
2.
3.
Short contact button life and / or
overheating of contacts.
1. Filling or dressing.
Interrupting excessively high
current.
Discolored contacts caused
by insufficent contact pres
-
sure, loose connection, etc.
Dirt or foreign matter on
contact surface.
Short circuit.
1.
2.
3.
4.
5.
Do not file silver tips. Rough
spots or discoloration will
not harm tips or impair their
efficiency.
Check for grounds, shorts or
excessive current.
Check contact carrier for
deformation or damage,
clean and tighten connec
-
tions.
Clean with Acetone.
Remove fault and check to
be sure fuse or breaker size
is correct
1.
2.
3.
4.
5.
6.
GENERAL TOUBLE SHOOTING GUIDE
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Содержание M24E24A
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