Bard WG3S1-A, Руководство по установке

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Manual 2100-483E
Page
32 of 59
24. FILTERS
A 2" thick throwaway filter is supplied with each unit.
This filter is installed by opening the main service door.
(See Figure 13.)
Replacement filters are available through your dealer.
25. COMPRESSOR CONTROL MODULE
The compressor control module is standard on the
models covered by this manual. The compressor
control is an anti-short cycle/lockout timer with high
and low pressure switch monitoring and alarm relay
output.
Adjustable Delay On Make And Break Timer
On initial power up or anytime power is interrupted to
the unit, the
delay on make period begins, which will be
2 minutes plus 10% of the delay on break setting.
When the delay on make is complete and the high
pressure and low pressure switches are closed, the
compressor contactor is energized. Upon shutdown, the
delay or break timer starts and prevents restart until the
delay on break and delay on make periods have expired.
During routine operation of the unit with no power
interruptions, the compressor will operate on demand
with no delay.
HIGH PRESSURE SWITCH AND LOCKOUT
SEQUENCE (Standard Feature)
If the high pressure switch opens, the compressor
contactor will de-energize immediately. The lockout
timer will go into a
soft lockout and stay in soft lockout
until the high pressure switch closes and the delay-on-
make time has expired. If the high pressure switch
opens again in this same operating cycle the unit will
go into
manual lockout condition and the alarm circuit
will energize. Recycling the wall thermostat resets the
manual lockout.
LOW PRESSURE SWITCH, BYPASS, AND
LOCKOUT SEQUENCE
If the low pressure switch opens for more that 120
seconds, the compressor contactor will de-energize and
go into a soft lockout. Regardless the state of the low
pressure switch, the contactor will reenergize after the
delay-on-make time delay has expired. If the low
pressure switch remains open or opens again for longer
than 120 seconds the unit will go into manual lockout
condition and the alarm circuit will energize.
Recycling the wall thermostat resets the manual
lockout.
FIGURE 13
ACCESS INTERNAL FILTER
THROUGH UPPER SERVICE DOOR