10TA Service Manual
TROUBLESHOOTING
4/23/14
8-9
SYMPTOM:
High head pressure. (Water cooled machine)
POSSIBLE CAUSE
POSSIBLE REMEDY
Misadjusted or defective water regulating
valve
Adjust or replace the valve. Never adjust the
valve stem as far open as it will turn, because it
will not close when the head pressure drops.
Insufficient water supply.
Check size of water line and pump output at the
condenser. Refer to the specification sheet for
water requirements. Check cooling tower sump
level and make-up water supply.
Cooling tower needing maintenance.
Check cooling tower fan belt and tighten or
replace as needed. Check spray nozzles and
sump screen and clean as needed.
Non-condensables (usually air) in system.
Check
refrigerant
tables
for
pressure/temperature
relation.
If
non-
condensables are present, Perform a total
pumpdown, let stand for at least 6 hours,
allowing non-condensables to gather in the
upper part of the receiver. Evacuate the freezer
and attach a recovery unit to the top receiver
purge valve (59). Open the valve and recover
the vapor for about five minutes. When the
freezer is evacuated, open the thaw gas solenoid
valve manually for about 15 seconds letting the
top vapor in the receiver blow into the freezer.
Close the solenoid valve and evacuate the
freezer again. Evacuate to 500 microns and
restart the machine.
Fouled (dirty) condenser.
Follow the diagnostic procedure outlined in,
Section 7, and clean the condenser per
instructions under Condenser Cleaning,
Содержание P18FXT
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Страница 10: ...10TA Service Manual TABLE OF CONTENTS vi BLANK ...
Страница 20: ...10TA Service Manual INTRODUCTION 4 14 14 1 10 BLANK ...
Страница 40: ...10TA Service Manual INSTALLING YOUR TUBE ICE MACHINE 4 14 14 3 18 BLANK PAGE ...
Страница 43: ...10TA Service Manual HOW YOUR TUBE ICE MACHINE WORKS 4 14 2014 4 3 FIGURE 4 1 Water Cooled Piping Schematic ...
Страница 44: ...10TA Service Manual HOW YOUR TUBE ICE MACHINE WORKS 4 14 2014 4 4 FIGURE 4 2 Air Cooled Piping Schematic ...
Страница 50: ...10TA Service Manual START UP AND OPERATION 4 14 14 5 6 BLANK ...
Страница 51: ...10TA Service Manual ELECTRICAL CONTROLS 4 14 14 6 1 6 Electrical Controls FIGURE 6 1 Control Panel SS PB1 PB2 ...
Страница 52: ...10TA Service Manual ELECTRICAL CONTROLS 4 14 14 6 2 FIGURE 6 2 Control Panel Components Standard ...
Страница 60: ...10TA Service Manual ELECTRICAL CONTROLS 4 14 14 6 10 BLANK ...
Страница 111: ...10TA Service Manual 10 7 OPTIONS AND ACCESSORIES FIGURE 10 4 Wiring Schematic Mid Size Machine P112 P118 P18XT ...
Страница 112: ...10 8 10TA Service Manual OPTIONS AND ACCESSORIES BLANK ...
Страница 120: ...10TA Service Manual TABLES CHARTS 7 2 14 11 8 BLANK ...
Страница 124: ...10TA Service Manual INDEX 5 30 14 12 4 ...