ULTIMA 2000
Chillers
Chillers
Installation & Maintenance Manual : 903-099 IM E 05/00
33
Maintenance
GENERAL
MAINTENANCE (CONT..)
6 MONTHS
ACTION
NOTES
Repeat 3 month checks plus the following:
SYSTEM
Check evaporator trace heating and low ambient
thermostat are set to activate at 4.0ºC.
Remember to re-cap the Schraeder
connections!
12 MONTHS
ACTION
NOTES
Repeat 6 month checks plus the following:
SYSTEM
Check safety devices cut out the compressor at the
correct settings.
REFRIGERATION
Check glycol concentration if appropriate.
Adjust as necessary.
Leak test all R407C joints and inspect all water
connections.
Rectify as necessary.
Check superheats with chiller running on full load
(the height of summer is recommended). Recheck
the charge following major adjustment of the
superheats.
Adjust as necessary. A period of 30
minutes should be allowed between each
resetting of the valve to allow pressures to
stabilise.
ELECTRICAL
Tighten all electrical terminals.
COMPRESSOR
MAINTENANCE
Periodic maintenance and inspection of this equipment is necessary to prevent premature
failure, the following periodic inspections should be carried out by period or hourly use
which ever is sooner.
new
1 Year
Measure compressor motor insulation.
7,500 Hours or 4 Years
Inspect compressor oil.
20,000 Hours or 4 Years
Inspect oil filter, gate rotor & suction filter.
SHUT DOWN PERIODS
For periods of winter shut down the following precautions are recommended:
•
Close the liquid and discharge ball valve
•
Cap service ports
•
Turn off electrical circuits
•
Drain the water from the chiller evaporator via the evaporator drain plug.