- 20 -
Section V Maintenance and Service
For personal safety and equipment reliability, only a qualified techni-
cian should perform the following procedures. Contact our Service
Department for assistance (see Preface, After-sale Support).
Service Contracts
Thermo offers on-site Service Contracts designed to provide extended life and
minimal down-time for your unit. For more information, contact our Service
Department (see Preface, After-sale Support).
Draining the
Reservoir
CFT-150s and CFT-300s are equipped with a ½ inch FPT DRAIN fitting located
on the rear of the unit.
To drain the other CFT reservoirs we recommend the use of a wet/dry vacuum.
Remove the reservoir plug and carefully insert the wet/dry vacuum so as not to
damage the cooling coils. NOTE: Tilting the unit more than 45° may allow
compressor oil to seep into the suction line.
Do not blow high-pressure air into the system. Doing so may rupture the
reservoir.
Cleaning
Reservoir
Periodically inspect the fluid inside the reservoir. If cleaning is necessary,
flush the reservoir with a cleaning fluid compatible with the circulating system
and the cooling fluid.
The cooling fluid should be replaced periodically. When operating at low
temperatures, the concentration of water in the cooling fluid will increase
over time, leading to a loss of cooling capacity.
Before changing the cooling fluid, raise the operating temperature of the unit
to de-ice the cooling coils. Refer to Section III, Filling Requirements for
instructions on replacing the cooling fluid.
Condenser
For proper operation, the unit needs to pull substantial amounts of air
through a condenser. A build up of dust or debris on the fins of the condenser
will lead to a loss of cooling capacity.
The lower front of the unit has a one-piece grille assembly. Gently pry the
assembly off with a flathead screwdriver. Use care not to scratch the paint.
Periodic vacuuming of the condenser fins is necessary. The frequency of
cleaning depends on the operating environment. After initial installation, we
recommend doing a monthly visual inspection of the condenser. After several
months, the cleaning frequency will be established.
To Next Page
Loading...
