26
New series of solid state lube oil protection controls with modern pressure transducers are replacing the old type me-
chanical expansion rod-resistance heater type oil protection controls.
FEATURES:
•
An entirely new control concept. This unique design incorporates a modern pressure transducer to monitor oil pressure.
•
Each control reflects improved calibration stability over the control's entire pressure range.
•
Controls boast truly accurate timing despite ambient temperature and voltage variations.
•
All electronic components are purposely "over-sized" and computer-matched to provide the greatest safety factor and
dependable service life.
•
Control's solid state circuitry is completely encapsulated to protect the components from the harmful effects of vibra-
tion, dirt or moisture.
•
Controls reset instantaneously, thanks to the precise solid state timing circuit. No annoying wait for old-fashioned timer
heater to cool down.
•
Control module is interchangeable with the old type conventional oil protection and with competitive brands of oil
protection controls. An exact replacement from a mounting, wiring and logic function standpoint.
•
Control maintains timing over the full voltage range of 102 to 264 VAC. Voltage selection is not necessary.
•
Unit is not position sensitive.
•
Users are offered a choice of controls with or without cover, a handy mounting bracket and other options.
•
"Logic" circuitry in the module monitors oil pressure pulses during marginal operation and integrates them resulting in
a longer span of time before lock-out occurs.
•
Last, but not least, it has enlarged the reset button to a new "thumb-sized" dimension. The reset button is slightly
recessed to protect it from damage.
VOLTAGE MONITOR
This device protects the motors in the unit from faults such as; under or over voltage, unbalance & phase reversal of the
power supply. When the device sensed such faults, it will cut-off the supply in the control circuit thereby cutting off power
to the motors. The voltage monitor will re-set automatically when power is brought back to it’s normal conditions.
LINE VOLTAGE
RANGE
UNDER VOLTAGE
TRIP
90%
190 - 480 VAC
TRIP & RE-SET VOLTAGE (% OF SET POINT)
OVER VOLTAGE
PHASE IMBALANCE
RE-SET
93%
TRIP
110%
RE-SET
107%
TRIP
6%
RE-SET
4.5%
ELECTRONIC THERMOSTATS
General Informations
: Single stage or two stage thermostats provide low voltage control of one or two stage heating
and/or cooling applications. The thermostat normally displays room temperature, mode of operation and which system is
currently on.
You may select different heating and cooling setpoints for the systems to maintain (example 70
0
F in heating and 75
0
F in
cooling). Raising or lowering the setpoints in heating or cooling is as simple as pushing a button.
The thermostat also allows you to select continuous fan operation, (useful when using an electronic air cleaner), or have
the fan on intermittent operation with the equipment.
The thermostat is best located about 1500 mm (5 Ft.) above floor level, on a partition wall (not an outside wall), and
should not be exposed to direct light from lamps, sun etc. It should be in return air stream, away from supply air registers/
diffusers.
78
60
18
_
=
OIL PUMP
OUTLET PRESSURE
CRANKCASE
PRESSURE
NET OIL
PRESSURE
