0-UC 13-FEB 18-2
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7
START UP
7.1
Pre-start up
After the installation is completed, a review of the following items should be performed before the
system is placed into operation:
Check electrical connections, fan motors, grills and all other fasteners for tightness. Be sure the
thermostatic expansion valve bulb is properly located, strapped and insulated.
With the system operating, check the supply voltage. It must be /- 10% of the voltage marked
on the unit nameplate.
7.2
Operation Checkout
A defrost cycle is needed when the frost build up is such that is impedes the airflow through the coil.
The defrost requirements will vary on each installation and may change depending on the time of the
year and other conditions.
Check the drain line and make sure drain line is clear and unit is aligned in all position to avoid
overflow of condensation water.
8
PREVENTATIVE MAINTENANCE
A preventative maintenance schedule should be set up as soon as the Unit Cooler is installed. The unit
should be inspected periodically for proper operation and buildup of dirt.
1.
Inspect and clean the drain pan to ensure there is no blockage. The drain pan should be
cleaned regularly with warm water and neutral detergent.
2. The cabinet, fans and guards can be cleaned with water and neutral detergent. Do not clean using
water jet.
3. The evaporator coil should be checked once a month for proper defrosting. Many variables affect coil
frosting such as room temperature, type of product being stored, how often new product is brought in
and the length of time the door to the room remains open. Summer conditions of high humidity can
cause heavier frost loads. It may be necessary to change the numbers of defrost cycles seasonally.
4. At least every six months check all fan motors. Tighten motor mounting screws and fan set screws.
WARNING
Please be aware that during electric defrost; the temperature of surrounding may rise dramatically.
Kindly keep a safety distance away from the unit.
WARNING:
All power must be disconnected before cleaning.
