Issue Date: 10-02-98 Rev. Date: 11-03-08 Rev. Level: 09 ECN N/A OIPM P/N 3420308 Page 3 of 4
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Element does not energize.
Not enough heat.
Too much heat.
1. Defective element.
2. Improper connection.
3. Pigtail loose from socket
connection.
1. Heater too small for application.
2. Heater mounted too high or too far.
1. Heater too large for application.
2. Heater mounted too low or too
close.
1. Replace element.
2. Check connection to outlet.
Check power.
3. Rewind pigtail on socket.
1. Add additional heaters.
2. Decrease mounting height or
distance.
1. Replace with smaller heater.
2. Increase mounting height or
distance.
"A" dimension indicates exact spacing
between mounting brackets. (See sketch
at right.)
REPLACEMENT PARTS LIST and EXPLODED VIEW
TROUBLESHOOTING CHART
Model
MM
-
13A
MM
-
18A
MM
-
24A
MM
-
33A
MM
-
46A
"A" Dim.
4"
9"
15"
24"
37”
2 1/2
A
Mounting brackets extend 1"
from the top of the end boxes.
Knockouts are 7/8" diameter to
accept 1/2" conduit.
4
1
7
18
6
5
11
9
2
19
20
8
15
14
3
10
16
3
10
12
8
6
7
9
11
MOUNTING DIMENSIONS