AIREDALE TurboChill TCW, Техническое руководство

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TurboChill™ Chillers
46 TurboChill Water Cooled Technical Manual 9216326 V1.13.0 07_2018
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Commissioning
To be read in conjunction with the commissioning sheets provided.
Pre Commissioning Checklist
The equipment contains live electrical and moving parts, ISOLATE prior to maintenance or repair work.
The door interlocking MCCB should be in the OFF position and the auxiliary alarm contact from the MCCB should be
linked out.
Check all pipework is complete and insulated where necessary.
Refrigerant Standing Pressure
The refrigerant charge is to be checked to ensure correct charge. This is done by measuring the liquid line standing
pressure and temperature. This can then be compared to refrigerant data tables or Refrigerant Comparator.
Standing pressures can only be measured in the liquid state.
Commissioning Procedure
Ensure that the water filter is fitted and clean.
Water Flow Rate
Check that the design water flowrate is available to the unit.
Waterside Pressure Drop
Measure the waterside pressure drop of the unit ensuring that the pump (if fitted) is operating.
Glycol Strength
Check and record the glycol type and strength. Low levels of glycol can cause freeze up problems when operating at low
temperatures or during the unit off state during cold ambient conditions.
Glycol concentration is measured by use of a Refractometer.
Differential Pressure Sensor
Ensure that the differential pressure sensor operates satisfactorily; the best way to do this is to:
● Reduce the flow to the chiller.
● From pressure curves determine the design Flowrate/ pressure drop.
● Make sure that any effects of glycol in the system are taken into account (flowrate and pressure drop).
● Input into the controller the reduced pressure drop (kPa) value (normally 80% of design flowrate).
● Once this value is programmed into the controller the water Flowrate can be reduced to verify that the low flow
alarm is activated
● Ensure that the tubes connected to the sensor are insulated
Low Supply Water Trip
To check operation of the low temperature trip the following procedure can be carried out:
ALL work MUST be carried out by technically trained competent personnel.
CAUTION
Please ensure all documents have been completed correctly and return to Airedale Technical
Support immediately to validate warranty.
CAUTION
Check phase rotation of electrical supply prior to running compressor as compressor is direction
sensitive.
IMPORTANT