Chromalox Electric Heater SRCCH 1 User Manual

4
RT  
(Supersedes PJ478-1)  
PJ490  
161-891364-004  
JULY, 2004  
SRCCH-1 and SRCCH-2  
Self Regulating Crankcase Heaters  
GENERAL  
SRCCH-1 and SRCCH-2 Self-Regulating Crankcase Heaters are  
supplied with flexible lock-strap and pre-stripped 28” cold leads for  
easy connection and hardwiring. These heaters are only to be used on  
up to 40” diameter compressors located in non-hazardous areas.  
ELECTRIC SHOCK/FIRE HAZARD. Do not expose  
heater to temperatures above 150˚F.  
INSTALLATION  
Before installing the SRCCH-1 or SRCCH-2 heater, a megger test  
should be performed to check integrity of electrical insulation jacket of  
the heating cable.  
Use SRCCH-1 for 120V operation and SRCCH-2 for 208-277V  
operation.  
MEGGER TESTING:  
To use the SRCCH-1 and SRCCH-2 heaters, wrap cable around  
crankcase and tighten the flexible lock-strap. Make certain to have  
good contact between the heater and the surface of the crankcase.  
Connect leads to GFCI protected circuit.  
Megger testing should be performed before first use and periodi-  
cally thereafter. Unplug assembly. Using a 2500 Vdc megohmmeter  
(500 Vdc minimum), check the insulation resistance between the  
power leads (black and white clamped simultaneously) and the green  
ground lead. Reading should be at least 20 meg-ohms regardless of  
cable length.  
ELECTRIC SHOCK HAZARD. Disconnect all power  
before installing or servicing heating cable and  
accessories. A qualified person must perform  
installation and service of heating cable and  
accessories. Heating cable must be effectively  
grounded in accordance with the National  
Electrical Code. Failure to comply can result in  
personal injury or property damage.  
If low reading occurs, cable and insulation should be inspected for  
signs of damage. DO NOT attempt to repair damaged heating cable.  
If physical damage is found, the entire unit should be replaced.  
© 2010 Chromalox, Inc.  
 

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