PV500-57 06/12
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6. Check for proper amperage with ammeter on power circuit. Amperage should not vary more than 5%, when
under full load, from amperage shown on data plate. (See Table 2). If amperage exceeds these limits,
immediately turn off main manual disconnect and refer to Electric Boiler Trouble Shooting Guide).
7. Check magnetic contactors for noise. If noisy, i.e., buzzing or chattering, turnoff main power disconnect,
disassemble contactor and blow out foreign particles. Drill filings, dirt or other particles can cause pitting of
points which will in turn burn out contactor and/or wire. Extra care has been taken during fabrication and
inspection for cleanliness; however, field installation is often responsible for debris collecting on the contactor
points.
8. On hot water supply boilers, the manual reset thermostat is a temperature limiting safety device set at 210°F.
The operating thermostat is set at the factory at 120°F. Adjustment may be made by using the TempTrac
control to set the desired temperature.
9. If an optional proportional sequencer is furnished, adjust set point to desired water temperature or pressure. (All
other temperature or pressure controls must be set above the sequencer’s set point.) Refer to manufacturer’s
product literature for servicing, operation and maintenance of proportional sequencer.
IMPORTANT:
After approximately 30 minutes of operation, turn off all power to the unit. With main disconnect off,
feel each wire connection and fuse clip with the hand for elevated temperature. If an elevated temperature is noted,
there is a loose connection at the point of greatest heat. All connections must be tight for proper performance.
