SERVICING
39
CFM
3.0
kW
4.8
kW
7.2
kW
9.6
kW
14.4
kW
19.2
kW
24.0
kW
28.8
kW
600
16
25
38
51
-
-
-
-
700
14
22
33
43
-
-
-
-
800
12
19
29
38
57
-
-
-
900
11
17
26
34
51
-
-
-
1000
10
15
23
30
46
-
-
-
1100
9
14
21
27
41
55
-
-
1200
8
13
19
25
38
50
-
-
1300
7
12
18
23
35
46
-
-
1400
7
11
16
22
32
43
54
65
1500
6
10
15
20
30
40
50
60
1600
6
9
14
19
28
38
47
57
1700
6
9
14
18
27
36
44
53
1800
5
8
13
17
25
34
42
50
1900
5
8
12
16
24
32
40
48
2000
5
8
12
15
23
30
38
45
2100
5
7
11
14
22
29
36
43
2200
4
7
11
14
21
27
34
41
2300
4
7
10
13
20
26
33
39
TEMPERATURE RISE (°F) @ 240V
HTR
KW
3.0
KW
4.7
KW
6.0
KW
7.0
KW
9.5
KW
14.2
KW
19.5
KW
21.0
KW
BTUH 10200 16200 20400 23800 32400 48600 66500 71600
ELECTRIC HEATER CAPACITY BTUH
FORMULAS:
Heating Output = KW x 3.413 x Corr. Factor
Actual CFM = CFM (from table) x Corr. Factor
BTUH = KW x 3.413
BTUH = CFM x 1.08 x Temperature Rise (T)
CFM = KW x 3.413
1.08 x T
T = BTUH
CFM x 1.08
S-61A CHECKING HEATER LIMIT CONTROL(S)
Each individual heater element is protected with a limit control
device connected in series with each element to prevent overheat-
ing of components in case of low airflow. This limit control will
open its circuit at approximately 150°F.
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing. Multiple power sources
may be present. Failure to do so may
cause property damage, personal injury
or death.
1. Remove the wiring from the control terminals.
2. Using an ohmmeter, test for continuity across the normally
closed contacts. No reading indicates the control is open -
replace if necessary.
IF FOUND OPEN - REPLACE - DO NOT WIRE AROUND.
S-61B CHECKING HEATER FUSE LINK
(OPTIONAL ELECTRIC HEATERS)
Each individual heater element is protected with a one time fuse
link which is connected in series with the element. The fuse link
will open at approximately 333°.
WARNING
Disconnect ALL power before servicing.
1. Remove heater element assembly so as to expose fuse link.
2. Using an ohmmeter, test across the fuse link for continuity - no
reading indicates the link is open. Replace as necessary.
NOTE:
The link is designed to open at approximately 333°F. DO
NOT WIRE AROUND - determine reason for failure.
S-100
REFRIGERATION REPAIR PRACTICE
DANGER
Always remove the refrigerant charge in a proper
manner before applying heat to the system.
When repairing the refrigeration system:
HIGH VOLTAGE!
Disconnect ALL power before servicing
or installing. Multiple power sources
may be present. Failure to do so may
cause property damage, personal injury
or death.
1. Never open a system that is under vacuum. Air and moisture
will be drawn in.
