DURAWATT
®
ELECTRIC WATER HEATERS
PV500-6 05/13
9
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. (Table 2). If amperage exceeds these limits, immediately
turn off main manual disconnect and refer to Electric Water Heater Trouble Shooting Guide.
7. Check magnetic contactors for noise. If noisy, i.e., buzzing or chattering, turn
off 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. The top thermostat is a temperature limiting safety device set at 200°F. The upper operating thermostat is
factory set at 130°F. The lower operating thermostat is set at 120°F Adjust stored water temperature by turning
the Operating thermostat dial to the desired temperature. The Upper Operating and Operating thermostats
should be set minimum 10°F higher.
Le thermostat est réglé à environ 49 degrés Celsius. Températures de l'eau supérieures à 52 degrés Celsius
peut causer instantanément de graves brûlures ou la mort de brûlures. Suivez les instructions dans le manuel
d'installation et de maintenance pour modifier la température de l'eau.
9. If an optional proportional sequencer is furnished, adjust set point to desired water temperature. (All other
temperature controls must be set above the sequencer’s set point.) Refer to manufacturer’s product literature
for servicing, operation and maintenance of proportional sequencer.
10. After startup and with the water heater operating, allow the water in the tank to reach the desired temperature
and de-energize the heating elements. Draw hot water from a nearby faucet or outlet until the heating elements
come back on. This will check for proper operation of the thermostats and other operating controls.
IMPORTANT:
After approximately 30 minutes of operation, turn off all power to the unit. With main disconnect
off, check each wire connection and fuse clip 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.
