Blower User Manual

ManualsBrandsChromalox ManualsBlowerSDRA-RG

DATE

SALES

REFERENCE

DIVISION SECTION

Chromalox

(Supersedes PF499-1)

PF499-2

SDRA

161-304812-003

AUGUST, 2010

RENEWAL PARTS IDENTIFICATION

Installation, Operation

and

Portable Industrial Unit

Blower Air Heater

Types SDRA and SDRA-RG

Specifications – Table 1

GENERAL

IMPORTANT:

SAVE THESE INSTRUCTIONS

RISK OF FIRE. Do not use as a residential or house-

hold heater

Hazard of Fire or Discoloration of Temperature

Sensitive Fabrics. Do not use as a residential or

household heater. Keep combustible material and

such fabrics away from heater. Do not operate heater

where flammable vapors, gases or liquids are present.

Heaters in the heat mode should not be operated in

room temperatures above 130˚F. Fan motor is not

designed to operate in ambients below -10˚F.

To avoid personal injury read “IMPORTANT INSTRUC-

TIONS” on page 2 before installation or operation of

heater.

Keep electrical cords and combustible materials, such

as drapes and other furnishings, away from heater.

Electrical Data (60 Hz) Dimensions (In)

Model

Volts kW Phase Amps BTU Height Width Depth

SDRA-30-43 480 30 3 37.2 102,360 38.5 26 44

SDRA-30-93 600 30 3 30.0 102,360 38.5 26 44

SDRA-48-43 480 48 3 58.9 163,776 38.5 30-1/4 44

SDRA-48-93 600 48 3 47.3 163,776 38.5 30-1/4 44

SDRA-60-43 480 60 3 73.3 204,720 38.5 30-1/4 44

SDRA-60-93 600 60 3 58.9 204,720 38.5 30-1/4 44

Summary of content (8 pages)

PAGE 1
Chromalox ® Installation, Operation DIVISION and 4 SECTION SDRA SALES REFERENCE (Supersedes PF499-1) RENEWAL PARTS IDENTIFICATION PF499-2 161-304812-003 DATE AUGUST, 2010 Portable Industrial Unit Blower Air Heater Types SDRA and SDRA-RG Specifications – Table 1 Electrical Data (60 Hz) Dimensions (In) Model SDRA-30-43 SDRA-30-93 SDRA-48-43 SDRA-48-93 SDRA-60-43 SDRA-60-93 Volts kW Phase Amps BTU Height Width Depth 480 600 480 600 480 600 30 30 48 48 60 60 3 3 3 3 3 3 37.2 30.0 58.
PAGE 2
IMPORTANT INSTRUCTIONS 8. Do not run cord under carpeting. Do not cover cord with throw rugs, runners or the like. Arrange cord away from traffic area and where it will not be tripped over. 9. To disconnect heater, turn thermostat off, then remove plug from outlet. 10. Connect to properly grounded outlets only. 11. Do not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause an electric shock, fire or damage the heater. 12.
PAGE 3
WIRING (cont’d.) 100 Temperature Rise ˚F SDRA heaters can be easily field if modified to vary the fan speed. There may be some circumstances where the use of short lengths of duct may not create sufficient pressure drop to achieve the desired temperature rise. This may also be the case of using the unit without a duct.
PAGE 4
FAN SPEED ADJUSTMENTS 7. Loosen the set screw on the fan pulley or motor pulley. Fig. 3 shows the construction of the fan pulley, the motor pulley is the same construction. Figure 3 Changing the Pitch Diameter of the Sheaves: 1. Tools required: 5/32” allen wrench, 3/8” nut driver, 9/16” box wrench and a medium size phillips screwdriver. 2. Remove the lower belt cover by removing the (5) sheet metal screws. 3. Remove the rear grille by removing the (4) 1/4” bolts and nuts. 4.
PAGE 5
WIRING DIAGRAMS P4 P5 P6 T2 T6 T4 T5 Inlet Thermostat T1 Motor T3 Outlet Thermostat Cutout T9 T7 T8 Toggle Switch 12 4 Front of Heater 1 Motor Relay Attach all Wires on this Side of Contactor to Auxillary Terminals 10 L1 Heater Terminal Box Contactor L2 L3 Blk Run these Wires Through 1" Conduit Blk/Red or Grey Wht Blk Transformer Control Enclosure SDRA 30kW, 480V, 3PH P4 P5 P6 T1 T2 T3 T6 T9 T4 T7 T5 T8 Run these Wires Through 1/2" Conduit Motor Green Pilot Light Amber Pilot Lig
PAGE 6
PARTS LOCATION 19 11 12 12 19 12 Front of Heater 12 12 12 11 11 11 11 View Showing Element Placement and Routing of Thermostat Capillary and Mounting of Bulb 12 12 11 12 Element Assembly 30kW Element Assembly 48kW (20-1/2) 19 11 11 11 Front of Heater 37 38 12 12 12 Twist Wire 11 11 11 12 12 View Showing Element Placement and Routing of Thermostat Capillary and Mounting of Bulb 12 (30-1/4) Front View with Grille Removed (All Sizes) Element Assembly 60kW (44) 21 32 18 21 23 Fan
PAGE 7
MAINTENANCE Replace or repair damaged cords or plugs immediately. Check tightness 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. ELECTRIC SHOCK HAZARD. Disconnect heater from power supply before servicing and/or inspecting the heater; failure to do so may result in electrical shock. RENEWAL PARTS IDENTIFICATION Contactor (20) Part No. Transformer (21) Part No.
PAGE 8
Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx. 2150 N. RULON WHITE BLVD., OGDEN, UT 84404 Phone: 1-800-368-2493 www.chromalox.