Schreiber Chillers Hypertherm Part No 039104 - Manual (Page 7)

Other Controls
(U) High Temperature Thermostat
When set to the desired temperature it will close at that temperature and
cause the warning light to blink.
(W) Blinker Control
If the high temperature thermostat closes the blinker control starts the
High Temperature Light to blink.
(V) High Temperature Warning Light
A blinking warning light to indicate supply water temperature is too high.
(A) 24V Transformer
Secondary power supply for control circuit.
(B) 24V Terminal Block
For distribution of 24V control power
Automatic Water Fill
This control allows the reservoir to refill automatically.
(M) Low Level Water Float Switch
When the float reaches a low water level it will close and open power to
the solenoid valve.
(K) High Level Water Float Switch
When the float switch reaches a high water level it will close power to the
solenoid valve.
(Y)
Automatic Water Level Relay
This system controls the high and low water level float switches.
(L)
24V Solenoid Valve
Opens and closes when the 24V electrical power is supplied by the relay
system.
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