Lochinvar PS1000 Service, Draining the system, Air separator, Clamp ring screw connections

9 Service

SL-PS Installation & Operation Manual

￿WARNING

De-energize and lock the solar control and pump to prevent them from accidentally being switched back on again by mistake before any maintenance or repair work.

Serviceisnotpermitteduntilcomponents and solar liquid have cooled.

Draining the system

■	Fit corresponding drainage hoses on to the filling and
	flushing connections and guide these into a collecting
	vessel.
■	Open the check valves by placing the red and blue
	thermometer handles in their 45° position.

Air separator

■The solar station features an air separator. Open bleeder valve until the solar liquid exits free of air bubbles.

■Check system pressure and top off solar liquid if required.

Flat seal screw connections

■The screw connections may have to be retightened as the seals settle. Note tightening torque requirements in the “Technology: installation and commissioning” section of this manual.

Clamp ring screw connections

■Use an open-ended wrench to retighten clamp ring screw connections if required (approx. 33 Ft lb).

■When tightening the clamp ring screw connection, use two wrenches–one wrench to prevent the pumping station from turning.

Disassembling the solar station

(Wall bracket, for repairs and service only)

■Use a screwdriver or similar tool to remove the retaining springs to the front.

￿ CAUTION	The solar station is now loose. Ensure
	that it does not slide forward and out
	of the wall bracket.

■ Open the fill/flush valve (return) under the pump.
■ Open the fill/flush vlave (forward flow) on the safety group.
■	Optional: Open the fill/flush valve at lowest point of
	system, as close to the tank connection as possible.
■	Open bleeder equipment at highest point (above
	collectors).

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