Chromalox PG421-1 Maintenance, Renewal Parts Identification, To Remove Heating Element

MAINTENANCE

ELECTRIC SHOCK HAZARD. Disconnect all power before installing or servicing heater. Failure to do so could result in personal injury or property dam- age. Heater must be installed or serviced by a qualified person in accordance with the National Electrical Code, NFPA 70.

To Remove Heating Element —

1.Remove terminal box cover 6 .

2.Disconnect heating element from electrical leads.

3.Remove threaded fitting nuts 9 and washers 8 .

4.Remove element support clips and secondary insulating bushings.

5.Lift out element.

To Install Element —

Observe instructions for removing element and proceed in reverse order. Be sure to replace secondary insulating bushings.

Care of Reflectors —

Reflectors should be cleaned periodically. A mild soap and water solution or fine cleaning powder is best although more dras- tic means may be required if reflectors are badly soiled by chemi- cal or other deposits. The reflector is aluminum. DO NOT use alkali cleaners since alkalies will dull reflector. Mild non-alkaline cleaners, such as used for scouring kitchen sinks, may be used. Reflectors are replaceable and may be purchased from Chromalox.

RENEWAL PARTS IDENTIFICATION

		6
	5
		10
		8
		11
13	2	9
14		7
		3

15

4

Figure 8

1Element assembly includes all parts shown except items 3 and 4 For element assembly part number, and prefix “R” to Element part number 2 Ex: R UTU-6VLT, 208V, 3000W

					4
			2	3	Aluminum
Model	Volts	Watts	Element*	Reflector	Housing
U-RAD-2LT	120		UTU-2LT
U-RAD-2VLT	208	800	UTU-2VLT	234-013411-032	152-016961-001
U-RAD-2LT	240		UTU-2LT
U-RAD-2VLT	275		UTU-2VLT
U-RAD-3LT	120		UTU-3LT
U-RAD-3VLT	208	1100	UTU-3VLT	234-013411-033	152-016961-002
U-RAD-3LT	240		UTU-3LT
U-RAD-3VLT	275		UTU-3VLT
U-RAD-4VLT	208		UTU-4VLT
U-RAD-4LT	240	1800	UTU-4LT	234-013411-034	152-016961-003
U-RAD-4VLT	275		UTU-4VLT
U-RAD-4LT	480		UTU-4LT
U-RAD-5VLT	208		UTU-5VLT
U-RAD-5LT	240	2500	UTU-5LT	234-013411-035	152-016961-004
U-RAD-5VLT	275		UTU-5VLT
U-RAD-5LT	480		UTU-5LT
U-RAD-6VLT	208		UTU-6VLT
U-RAD-6LT	240	3000	UTU-6LT	234-013411-036	152-016961-005
U-RAD-6VLT	275		UTU-6VLT
U-RAD-6LT	480		UTU-6LT
U-RAD-7VLT	208		UTU-7VLT
U-RAD-7LT	240	3600	UTU-7LT	234-013411-037	152-016961-006
U-RAD-7VLT	275		UTU-7VLT
U-RAD-7LT	480		UTU-7LT
U-RAD-22LT	120		UTU-2LT (2)
U-RAD-22VLT	208	1600	UTU-2VLT (2)	234-013411-032 (2)	152-016963-001
U-RAD-22LT	240		UTU-2LT (2)
U-RAD-22VLT	275		UTU-2VLT (2)
U-RAD-32LT	120		UTU-3LT	234-013411-033
			UTU-2LT	234-013411-032
U-RAD-32VLT	208		UTU-3VLT	234-013411-033
			UTU-2VLT	234-013411-032
		1900			152-016963-002
U-RAD-32LT	240		UTU-3LT	234-013411-033
			UTU-2LT	234-013411-032
U-RAD-32VLT	275		UTU-3VLT	234-013411-033
			UTU-2VLT	234-013411-032