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If glycol-filled loops are equipped with automatic water make-up, close gate valves,
if possible, and tag them so they will remain closed.
Synthetic and Silicone Oils
Oils do not require replacement or reinhibiting. However, the fluid pressure must be
adequate.
Check for the recommended pressure from the system's operation and maintenance
manual. if no such manual exists, Section 5.2.6 includes a chart of recommended
pressures.
6.1.6 Controls.
Electrical Connections
Check all conduit and wiring connections. Make sure the system is mechanically
grounded (to earth). Pay particular attention to the sensor wire connections. Make
sure no small strands of wire from adjacent terminals touch each other. Such
contact provides a direct short circuit which completely disrupts normal control
operation.
Mounting
Be sure the control and associated conduit is securely mounted.
Control Operation
With all sensor wires disconnected and the control switch in the "automatic" position,
jumper the two terminals marked "Collector" (or "COLL," etc.). The solar loop pump
(and water loop pump, if used) should come on. (Figure 6-8)
FIGURE 6-8
Checking On/Off
Operation by the
Jumper Method
MAINTENANCE
6.1 MAINTENANCE PROCEDURES
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