Pressure Relief Valve (Prv), Bottom-Half Plumbing N 1 M6 - Process Technology LUFRAN Instruction

Maintenance Procedures (Continued):
M6:
Pressure Relief Valve (PRV), Bottom Half Plumbing
The PRV is located near the inlet water plumbing connection at the bottom of the heater
side of the cabinet. The PRV and the inlet plumbing should be inspected every 6
months to insure that there are no leaks.
Procedure M6-1: PRV Inspection Procedure:
1) If the unit is in LOCAL mode, press the DISABLE HEATER button on the command
panel of the touchscreen. If the unit is in REMOTE mode disable the heater from the
customer supplied remote controller.
energizing.
2) Continue water flow through the unit for this procedure. Allow the unit to cool to
ambient inlet temperature.
3) Open the rear cabinet door.
4) Inspect all of the plumbing connections on the bottom half of the unit for leaks. Any
leaks found must be repaired.
5) Locate the PRV which is connected to the TEE fitting that is adjacent to the inlet
plumbing connection (see figure).
6) Inspect the discharge tubing of the PRV. Confirm that there is no liquid in the
discharge tube. If the PRV is leaking it must be replaced.
7) Confirm that the weep hole of the PRV is not leaking.
M-43-01
Revision - Date: 08 – 04/06/15
Figure 46: PRV location
This will also prevent the heaters from
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Lufran Single Outlet Manual