BAC ICE CHILLER TSU-C-D, Operating And Maintenance Instructions Manual

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13. If using refrigerant, evacuate the system and charge with the specified refrigerant.
Caution
DO NOT CLOSE BOTH INLET (LIQUID SUPPLY) AND OUTLET (WET RETURN) VALVES ON
THE ICE CHILLER
®
COILS WITHOUT THE USE OF A BY-PASS RELIEF AROUND THE
VALVES. THIS WILL PREVENT AN EXCESS BUILD-UP OF PRESSURE IN THE COILS AS A
RESULT OF EXPANSION OF THE REFRIGERANT AS THE COILS WARM UP.
14. Inspect the BALTIBOND
®
Corrosion Protection System finish on the unit.
15. If the unit will be subjected to subfreezing ambient conditions, heat tape the drain and drain ball valve to prevent
cracking.
AFTER 24 HOURS
After 24 hours of operational load, proceed as follows:
1. Check the air pump for any unusual noise or vibration.
2. Examine ice build along the tubes for even thickness and distribution after the ice build is complete. If ice build
along the coil is significantly uneven, adjust glycol or refrigerant flow through each coil.
At full ice build, the ice layer on the tubes will be slightly conical, particularly for glycol feed systems.
3. Check the water level and adjust if required.
Caution
DO NOT OVERFILL!
OVERFLOWING THE TANK MAY DAMAGE THE INSULATION AND/OR CAUSE THE
OPERATING CONTROLS TO MALFUNCTION.
4. Adjust water distribution using balancing valves on each water inlet connection (valves to be provided by
others):
-
Start with the valves on the two outermost inlets closed so all warm water is guided through the central
water inlet connection.
- Run the unit for a few cycles of ice build/melt.
- Determine areas of ice bridging (if any).
- If bridging occurs in certain areas, open the appropriate valves to direct more water flow to the areas of
bridging. The central inlet brings warm water to the opposite of the tank, while the outermost (smaller) inlets
bring warm water to the near end of the tank.
- Readjust the valves if necessary after a few cycles, until a quite uniform melt-out ice shape is obtained.
The final position of the valves depends strongly on the water flow rate and the load profile.
(SEASONAL) SHUT-DOWN PROCEDURE
The following procedures should be performed when the ICE CHILLER
®
Thermal Storage Unit is to be shutdown
for an extended period of time.
W W W . B A L T I M O R E A I R C O I L . E U
9
3 Operating Instructions
3 Operating Instructions