Table of Contents
Advertisement
!
CAUTION:
Very high discharge pressure is present in system. Quick disconnects on your gauges will minimize danger and loss
of refrigerant. Comply with federal regulations for reclaiming refrigerant.
C
M
ONDENSER
ODULATING
The reason for using a water modulating valve is to supply the correct amount of water to the condenser. and to
maintain a proper operating pressure to refrigeration system high side.
The flow of water through the valve is increased as the high side pressure rises and is decreased as high side
pressure lowers.
To calibrate the amount of water flow with the refrigeration system high side pressure, turn adjustment screw
located on end of valve opposite of bellows. See Figure 6. Turn screw counterclockwise to raise opening point or
clockwise to lower opening point. Opening point of valve should be set to maintain proper operating pressure in
refrigeration system high side. Refer to Pressure Chart on page 3. Closing point of valve should be set low enough
to close valve during compressor stand-by periods.
NOTE: Cold water will absorb heat faster than warm water. The water flow will therefore automati-
cally increase as inlet temperature increases.
Figure 5. Expansion Valve
C
M
ONDENSER
ODULATING
!
WARNING:
Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all
power is off to the unit before performing any work.
Failure to comply could result in serious injury, death or damage to the equipment.
1. Shut off water supply to condenser and evacuate refrigerant from system.
2. Remove inlet water line from Condenser Modulating Valve. Also remove tube from high side refrigerant line.
3. Remove Condenser Modulating Valve and bracket from unit.
4. Remove valve from bracket.
5. Replace Condenser Modulating Valve by reversing Steps 1 thru 4. Then pull system into vacuum.
6. Charge unit with proper amount of refrigeration.
7. Turn power and water on to unit.
8. With unit running, adjust modulating valve to proper setting.
9. Go through a complete system check.
© 2000-2012, IMI Cornelius Inc.
UC 701 Series Continuous Flow Icemaker Installation and Service Manual
V
ALVE
V
R
ALVE
EMOVAL
- 13 -
Figure 6. Adjustment Screw
Publication Number: 630460150
Advertisement
Table of Contents
Troubleshooting
