STARTUP AND MAINTENANCE
MAGNITUDE WMT CHILLER
DAIKIN APPLIED
46
Startup and Maintenance
Pre-Startup
Inspect the chiller to ensure no components became loose or
damaged during shipping or installation including leak test and
wiring check. Complete the pre-start checklist at the front of this
manual and return to Daikin Applied prior to startup date.
CAUTION
Dyes used for refrigerant leak detection are not tested or recommended for use
in Daikin Aplied chillers. Use of these products may damage and/or degrade
the performance of the equipment and will void the manufacturer warranty
NOTICE
Daikin Applied service personnel or factory authorized service
agency must perform initial startup in order to activate warranty.
They must return the “WMT Centrifugal Equipment Warranty
Form” within 10 working days to Daikin Applied as instructed on
the form to obtain full warranty benefits.
Flow Switch Installation and
Calibration
A thermal dispersion flow switch uses heat to determine flow and
therefore must be calibrated during system startup. A thermal
dispersion flow switch can be an acceptable replacement for
paddle type flow switches and differential pressure switches, but
care must be taken regarding wiring.
The thermal dispersion flow switch supplied by Daikin Applied,
, comes as a two part unit consisting of a flow
switch and an adapter labeled E40242 by the supplier.
Figure 48: Thermal Dispersion Flow Switch and Adapter
NOTICE
Flow switch MUST be calibrated before chiller operation. Failure to properly
calibrate the switch may result in severe chiller damage and/or void warranty.
Mounting
highlights the position of the electrical connector and
indentation ‘mark’ on flow switch.
Figure 49: Flow Switch Details
No .
Descriptions
1
Electrical Connector
2
Indentation
It is required that the flow switch be mounted such that the
electrical connection and indentation ‘mark’ are pointed in the
.
If the flow sensor is to be mounted away from the unit, the sensor
should be mounted on the wall of the outlet pipe of evaporator
and condenser, or in a run of straight pipe that allows 5 to 10
pipe diameters prior to the sensor and 3 to 5 pipe diameters
of straight pipe after the sensor. Flow switch is placed in outlet
pipe to reflect flow leaving the barrel. If installation on the
inlet pipe is necessary, contact Chiller Technical Response at
TechResponse@DaikinApplied.com to review the jobsite details.
