CAUTIONS
1.Before servicing, disconnect the heater from the electrical power source by removing the electrical plug from the wall receptacle.
Note:When certain tests require electrical power to be applied, connect electrical power only for the time necessary to complete the test.
2.Do not bypass safety devices except when instructed to do so during troubleshooting procedures.
3.If replacement parts are necessary, do not substitute with
4.Make sure all electrical connections are secure and correct prior to connecting heater to a grounded electrical power source.
ALL SYSTEMS WORKING
TOGETHER
There are three basic systems within the heater, the heating system, air system and safety system.
A tubular heating element (A) warms the sur- rounding air.
A fan (B) on one end of a motor (C) draws air into the product. This air is directed over the heating element to create warm heated air out.
An over temperature switch (D) shuts the heater off in the abnormal event a motor were to fail.
A tip over switch (E) shuts the heater off in the event the product is tipped over.
D | B |
| A |
E |
|
| C |
Air To Be Heated | Heated Air |
Figure 4 - System Operation | |
INSPECTION | |
Check for damage in the following ways: | |
1.Examine exterior of plastic shroud and inside pole receiver for cracks. Replace shroud if cracks are found.
2.Examine cover of on/off switch for cracks. Replace switch if cracks are found.
TROUBLESHOOTING
CAUTION: Risk of electric shock.
If your product fails to operate:
1.Make sure the electrical outlet GFCI or circuit breaker and extension cord is working.
2.Check for operation of tip switch. The ON/ OFF switch light can be on but the tip switch OFF. Move product until a “click” is heard. To prevent damage of tip switch post, do not slide product.
3.Look for obstructions around fan. If you find an obstruction, turn the product OFF and UNPLUG THE PRODUCT. Have the product serviced by a qualified individual.
4.Check for tripped thermal protector. Motor and heating element do not operate. Wait 10 minutes for product to cool. Push reset button. See Thermal Limit Switch below.
THERMAL LIMIT SWITCH
If product is used in temperatures below 75° F (28.9° C), the limit switch should not require resetting unless there is a malfunction. If a mal- function does occur, have the product serviced by an authorized service center.
Resetting Thermal Limit Switch
1.Unplug product.
2.Allow product to cool.
3.Turn product upside down.
4.Remove plug on bottom.
5.Insert provided plastic push rod through hole and guide to small red button on thermal limit switch (see Figure 5). A flashlight will improve visibility.
6.Lightly push red button to reset switch.
Air Intake Openings
Push Rod
Access to
Thermal
Limit Switch
Figure 5 - Resetting Thermal Limit Switch
6 | www.desatech.com |
