Precision Control Systems SpotIR 4085 - Manual (Page 13)

Maintenance & Troubleshooting
Section 5
The Model 4085 heater requires very little maintenance during its normal lifetime. The
life of the heater will be prolonged as long as the proper amount of cooling air (120
SCFH) is supplied and the supply voltage to the heater does not exceed specifications.
Periodic inspection and removal of dirt and contaminants will ensure that equipment
can be operated safely.
Lamp and Reflector Surface Maintenance
In dirty environments or heating operations the lamps and reflector shields may
become contaminated with smoke, dust, fingerprints or other foreign matter. When this
occurs it is recommended that they be cleaned. Doing so will extend the life of the
lamps and improve the heater’s overall performance. Use the following procedure:
!WARNING!
Disconnect the power cable from the power source and
allow the heater to cool before continuing.
!CAUTION!
Wear soft, clean, oil-free flannel or plastic gloves when
handling quartz lamps. If skin oils come in contact with the
quartz tube, the lamp will fail prematurely.
Cleaning Internal Reflector Shield Surfaces
With a soft, clean, oil-free flannel or plastic gloves when handling quartz lamps. If skin
oils come in contact with the quartz tube, the lamp will fail prematurely.
1. Remove the reflector shield from the heater casting by loosening the three
retaining screws and carefully lifting the shield away from the casting so as to
not damage the lamp.
2. Disassemble the reflector shield by removing the nuts and bolts holding both
reflector shield halves together.
3. Using a soft, dry cloth or tissue, wipe all visible residue from both shield halves.
Household ammonia may be used as a solvent if necessary.
4. Chrome polishing compound can be used with a soft flannel cloth.
5. Reassemble the reflector shield and carefully place it on the heater casting
making sure to place the shield half with three screw holes on the casting. Take
care to not damage the heater lamp while installing the reflector shield.