7
MAINTENANCE
ELECTRIC SHOCK HAZARD. Disconnect heater from
power supply before servicing and/or inspecting the
heater; failure to do so may result in electrical shock.
Replace or repair damaged cords or plugs immediately. Check tight-
ness of all electrical connections prior to energizing Dragon. Blow out
or vacuum away any dirt or debris that may have accumulated around
the control enclosure fan motor or heating elements.
RENEWAL PARTS IDENTIFICATION
PARTS COMMON TO ALL UNITS
Item
Description
Part No.
18
Temperature Control
300-019560-002
19
Hi-Limit Cut-out
300-049200-004
23
Toggle Switch
292-046123-001
32
Blower Assembly
021-304823-009
33
Inlet & Outlet Grille
134-304780-002(2)
36
Caster / Locking
375-122535-007
37
Handle - Right Side
139-304779-003
38
Handle - Left Side
139-304779-004
45
Semipneumatic Wheel
333-557518-004(2)
77
Pulley Var. Pitch 7/8”
225-305091-004
78
Pulley Var. Pitch 5/8”
225-305091-003
79
Pulley Belt
017-049702-009
86
Pilot Light - Green
213-122066-043
87
Pilot Light - Amber
213-122066-042
94
Thermostat Knob
169-300468-003
95
Thermostat Label
220-019122-010
Element (11)
Element (12)
Motor (16)
Contactor (20)
Transformer (21)
Fuse Block (80)
Fuse (81)
Term. Block (84)
Model No.
Volts
kW Phase
Part No.
Part No.
Part No.
Part No.
Part No.
Part No.
Part No.
Part No.
SDRA-30-43
480
30
3
118-304793-011(3) 118-304793-013(3) 193-121843-232 072-304551-008
315-304252-001
N/A
N/A
N/A*
SDRA-30-93
600
30
3
118-304793-012(3) 118-304793-014(3) 193-121843-233 072-304551-008
315-304252-003
N/A
N/A
N/A*
SDRA-48-43
480
48
3
118-304793-011(3) 118-304793-013(6) 193-121843-232 072-304551-008(2) 315-304252-001 129-025643-001
128-026510-005(3) 303-047468-004
SDRA-48-93
600
48
3
118-304793-012(3) 118-304793-014(6) 193-121843-233 072-304551-008(2) 315-304252-003 129-025643-001
128-026510-005(3) 303-047468-004
SDRA-60-43
480
60
3
118-304793-011(6) 118-304793-013(6) 193-121843-232 072-304551-008(2) 315-304252-001 129-025643-001(2) 128-026510-006(6) 303-047468-004
SDRA-60-93
600
60
3
118-304793-012(6) 118-304793-014(6) 193-121843-233 072-304551-008(2) 315-304252-003 129-025643-001(2) 128-026510-006(6) 303-047468-004
* Wired directly to contactor.
All units contain two sets of elements. The ratings of the elements on the discharge end have a lower wattage than the elements on the inlet end of heater.
The ends of the elements are color coded, the lower wattage are color coded yellow and the higher wattage are color coded blue.
a. Lower wattage elements, discharge end, yellow coded
b. Higher wattage elements, fan end, blue coded
