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Operation
Process temperature should never exceed
maximum system rating.
For complete process controller instructions, please
refer to Chromalox manual PK510.
If needed, factory settings for process controller can be
referenced per table below:
Power Control
Drawing Number
Full Contactor
223-123625-308
Contactor, SCR Trim
223-123625-309
Full SCR
223-123625-310
Element overtemperature control is pre-set from the
factory at 350˚F (177˚C). This should be adjusted to a
range of 50-100˚F (28-56˚C) above the operating set-
point. For complete overtemperature controller instruc-
tions, please refer to Chromalox manual PDS LIMIT.
Chromalox MWS unit is a component to a cus-
tomer integrated process. Ensure adequate
safety devices have been installed and func-
tion properly. Ensure proper review of Control
Panel Information Package for proper installa-
tion and use.
Optional Accessories
Some MWS units are provided with optional equipment
that require additional installation concerns.
Strainer, Inlet/Outlet Valves and Dedicated
Fill Connections
Ordering (2) or more of these options will require on-
site installation to avoid shipment damage. The order
of assembly, starting at pump inlet should be: strainer,
fill connection, then gate valve. A bolting kit, with gas-
kets is provided for simple installation. Please note that
during operation, the strainer should be checked as
part of a regular maintenance program.
All added-on equipment must be adequately support-
ed to avoid damage to pump.
Purge Connections
Nitrogen purge connections are provided for a hazard-
ous area. Ensure nitrogen system is operational and
installed correctly prior to operation. Incoming power
wiring must also be installed in accordance with NEC
requirements for hazardous area.
Digital Overtemperature Control
The overtemperature controller is pre-set at the fac-
tory to 350˚F (177˚C). The controller should be set for
50-100˚F (28-56˚C) higher than operating temperature.
Please refer to Chromalox manual PK508 for complete
operation.