Sterlco Royal Series Compact Temperature Control Unit - Manual (Page 35)

Royal Series Water Temperature Control Units Page 35
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CAUTION
1) Your Royal Series system operates with hot water under pressure. To reduce
the risk of scalding:
• Always wear work gloves and safety glasses when operating the unit.
• Never operate the unit with panels or shields removed.
• Pipe the relief valve to an open drain.
• Never install a fitting or hose that is rated less than 150 psig and 250°F
(1,034.25 kPa/10.34 bars and 121ºC).
2) To reduce the risk of electrical shock:
• All electrical installation and repairs should be done by a qualified
electrician.
• Ground the unit in accordance with electrical codes.
• Never attempt any repairs without first opening and locking out the main
disconnect.
• Never deactivate or neutralize any safety device.
5-4 Sequence of Operation
The simplicity of design and the highly engineered controller make
this unit almost self-operating. The
START , STOP , and VENT
buttons and the temperature controller buttons are all that is
required to operate this unit.
After you complete all connections, turn the water supply ON , then
turn control power ON . The unit automatically vents for a preset
time of one (1) minute. If you need additional vent time, press the
VENT button on the control panel.
As the water comes in the water supply line, the water must enter
the pump, up through the tank and out through the
TO PROCESS
line, through the process, back through the FROM PROCESS line,
and through the solenoid line and out the drain line.
At this time, watching the drain for bubbles or erratic flow will
indicate whether or not the system has been properly vented. If a
steady stream flows from the drain line, it is certain that all the air
is out of the system. If you have the unit connected to a central
system, watch the pressure gauges for erratic pressure changes. If
the gauge is steady, all the air is out of the system.