Chromalox SDRA-RG Maintenance, Renewal Parts Identification, Parts Common to ALL Units

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

				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

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

7