Replacing Sensors Or Transducers; Control Panel Fault Or Service Messages - Quincy QGV-100 Instruction Manual

Section V - Servicing

Replacing Sensors or Transducers

To replace a temperature sensor (HAT
probe):
• Disconnect conduit from elbow of
probe.
• Cut wires and remove probe from
discharge tube.
• Install new probe into discharge tube.
• Connect wires of new probe to existing
wires using suitable splice and insert in
to conduit.
• Connect conduit to elbow of probe.
• Complete HAT test to verify correct
installation.
To replace a pressure transducer:
• Open enclosure door and locate the
pressure transducer (in the upper left-
hand corner of the panel).
• Remove wire channel cover
• Trace wires from transducer to the
microprocessor.
Control Panel Fault or Service
Messages
The control panel screen will display a
'Fault' or 'Service' button to indicate any
alarms or service requirement messages.
Touch the gray button ('Fault' or 'Service')
to access the message(s), touch 'Fault
Reset' to clear the message after service
has been performed or the fault has been
corrected.
40
Prior to touching any portion of the
printed circuit board, ground yourself
using a grounding wrist strap to remove
any static electricity.
• After assuring the compressor is
properly grounded, clip the grounding
wrist strap to any exposed metal on the
frame of the compressor.
• Disconnect transducer wires at
microprocessor.
• Remove transducer from delrin bushing.
• Replace the delrin bushing.
• Install new Teflon bushing and
transducer.
• Connect transducer wires to
microprocessor and reinstall wire
channel cover.
Quincy Compressor-QGV Series
notiCe!