Chromalox SDRA user manual

User manual for the device Chromalox SDRA

Device: Chromalox SDRA
Category: Blower
Manufacturer: Chromalox
Size: 0.84 MB
Added : 6/11/2014
Number of pages: 8
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Abstracts of contents
Summary of the content on the page No. 1

®
Chromalox
Installation, Operation
DIVISION SECTION
4 SDRA
and
SALES
REFERENCE (Supersedes PF499-1) PF499-2
RENEWAL PARTS IDENTIFICATION 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
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 60

Summary of the content on the page No. 2

IMPORTANT INSTRUCTIONS When using electrical appliances, basic precautions should always be 8. Do not run cord under carpeting. Do not cover cord with throw followed to reduce the risk of fire, electric shock and injury to persons, rugs, runners or the like. Arrange cord away from traffic area and including the following: where it will not be tripped over. 1. Read all instructions before using this heater. 9. To disconnect heater, turn thermostat off, then remove plug from 2. This heater is hot

Summary of the content on the page No. 3

WIRING (cont’d.) SDRA heaters can be easily field if modified to vary the fan speed. Temperature Rise vs Duct Length There may be some circumstances where the use of short lengths of 30 kW 100 duct may not create sufficient pressure drop to achieve the desired tem- 1500 RPM perature rise. This may also be the case of using the unit without a duct. 75 This insufficient static pressure drop may result in high air flow, with 1800 the maximum temperature rise below the desired level, (even after the

Summary of the content on the page No. 4

FAN SPEED ADJUSTMENTS Changing the Pitch Diameter of the Sheaves: 7. Loosen the set screw on the fan pulley or motor pulley. Fig. 3 1. Tools required: 5/32” allen wrench, 3/8” nut driver, 9/16” box shows the construction of the fan pulley, the motor pulley is the wrench and a medium size phillips screwdriver. same construction. 2. Remove the lower belt cover by removing the (5) sheet metal Figure 3 screws. 3. Remove the rear grille by removing the (4) 1/4” bolts and nuts. 4. Remove the belt cove

Summary of the content on the page No. 5

WIRING DIAGRAMS P4 P5 P6 T1 Inlet Outlet T2 Cutout Motor Thermostat Thermostat T3 T6 T9 T4 T7 T5 T8 12 Toggle Switch 4 Front of 1 Heater Motor Relay Attach all Wires on this 10 Side of Contactor to Auxillary Terminals Contactor Heater Terminal Box L1 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 Motor T3 T6 T9 Run these Wires T4 T7 T5 Through 1/2" T8 Amber Pilot Light Conduit Green Pilot Light Cutout Inlet T

Summary of the content on the page No. 6

PARTS LOCATION 19 11 12 12 19 12 Front of Heater 12 12 12 11 11 11 12 View Showing Element Placement 11 and Routing of Thermostat Capillary 12 11 and Mounting of Bulb 12 Element Assembly 30kW Element Assembly 48kW (20-1/2) 19 11 11 37 11 38 Front of 12 Heater 12 12 Twist Wire 11 11 11 12 12 View Showing Element Placement and Routing of Thermostat Capillary 12 and Mounting of Bulb (30-1/4) Element Assembly 60kW Front View with Grille Removed (All Sizes) (44) 21 18 32 21 23 Fan Pulley (38-1/2) 77

Summary of the content on the page No. 7

MAINTENANCE 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 ELECTRIC SHOCK HAZARD. Disconnect heater from the control enclosure fan motor or heating elements. power supply before servicing and/or inspecting the heater; failure to do so may result in electrical shock. RENEWAL PARTS IDENTIFICATION Element (11) Element (12) Motor (16) Contacto

Summary of the content on the page No. 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.com


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