Chromalox PQ402-6 - Manuals

Boiler syphons water: 1. Follow blowdown instructions. Boiler with condensate system floods overnight: 1. Vacuum breaker is not operating. Elements fail: 1. Low Water Cut-Off system has failed. 2. Lower equalizer tube on Low Water Cut-Off is clogged due tolack of blowdown. 3. Contactor points have f...

If the contactor fails to energize, check for blown fuses in the control circuit. If the fuses are not blown, check the contac-tor holding coil. The holding coil can be checked by jumperingTerminal L1 of the line and Terminal No. 4 (coil lead) on thecontactor. See Figure 1. A. If the contactor fails...

2150 N. RULON WHITE BLVD., OGDEN, UT 84404 Phone: 1-800-368-2493 www.chromalox.com LOW WATER CUT-OFF — Like the pressure control, difficul- ties can be broken down into the mechanical and electricalgroups. The mechanical difficulties can be corrected on the high pres- sure 100 psig motor and pump un...