SmartPlate EV Installation, Operation and Maintenance Manual
CHAPTER 6
– SCHEDULED MAINTENANCE
OMM-0147_C
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PLATE PACK LEAKAGE CHECKS
Instructions
3. If there is no evidence of leakage, reinstall the thermal jacket on the Plate Pack and return
the unit to service use.
6.3 OVER-TEMP SWITCH CHECK
Once every 3 months, check the Over-Temp switch located in the ECS II Control Box as
follows:
OVER-TEMP SWITCH CHECK Instructions
1. Follow the instructions in Section 4.2.3 to lower the Over-Temp setting to approximately
5°F below the present setpoint temperature shown in the lower display of the Temperature
Controller.
2. Verify that an over-temp alarm is generated and that the following events occur:
a) The 3-Way Control Valve closes.
b) The Over-Temp switch generates an audible alarm.
3. Following successful completion of the Over-Temp alarm check, return the Over-Temp
switch
setting to its original setting (20°F above the unit’s setpoint).
6.4 STRAINER INSPECTION AND CLEANING
Every 6 months, check and clean the Strainers in both the Boiler Water and Domestic Water
piping of the unit. Perform the following steps for each Strainer:
STRAINER INSPECTION AND CLEANING Instructions
1. Attach a hose to the blow-down valve at the base of the Strainer. Cycle the blow-down
valve open and closed 6 times.
2. If Step 1 was not sufficient to clean the Strainer, refer to Chapter 8:
Corrective
Maintenance
, Section 8.2.3:
Strainers
.
Figure 6.4. Strainer & Blow-Down Valve Locations
BOILER WATER
INLET STRAINER
DOMESTIC WATER
INLET STRAINER
WITH BLOW-DOWN
VALVE
