24
M
INI
-S
PACE
EC I
NSTALLATION
, O
PERATION
AND
M
AINTENANCE
M
ANUAL
4.1.6 Condensate
Pump
The condensate pump should be inspected semi-annually and
cleaned. Ensure that the fl oat works freely. Wipe the fl oat with a
wet cloth and detergent to remove dirt. Clean the tank bottom.
Check the discharge line to ensure it is open and water can
pass through it freely.
4.1.7 Condenser
Maintenance access to the condenser is through one or two
removable panels (depending on the unit model). For air-
cooled condensers, clean the condenser coil of all debris that
could inhibit airfl ow. This can be done with compressed air or
with a commercial coil cleaner. Check for bent or damaged
coil fi ns and repair as necessary. On outdoor units in winter, do
not permit snow to accumulate on or around the condensing
unit. Check all refrigerant lines and capillaries for vibration
isolation and support as necessary. Check all refrigerant and
coolant lines for signs of leaks.
CAUTION
The compressor crankcase heater is energized as
long as power is applied to the unit. If the main switch
is disconnected for a long period, do not attempt
to start the condensing unit until eight hours after
applying power. This allows enough time for all liquid
refrigerant to be driven out of the compressor. This
is especially important at low ambient conditions.
4.1.8 Pump
Package
Routinely examine the areas around the pump motor(s) and
inlets and outlets. Check coolant and piping for signs of leaks.
Examine all wiring for signs of chafi ng, loose connections or
other obvious damage. Examine brackets, motor mounts and
hardware for loose or missing parts or other damage. Lubricate
motor bearings if applicable. (See the instruction manual
provided with the pump package.)
4.2 Troubleshooting
Turn off all power to the unit before conducting any
troubleshooting procedures, unless the procedure specifi cally
requires the system to operate. For troubleshooting purposes
the system may be operated with the door open by using a
pair of channel lock pliers to turn the shaft of the main power
disconnect switch to the “On” position. When the switch is
turned on, high voltage will be present inside the cabinet.
Exercise caution to prevent injury. Keep hands, clothing
and tools clear of the electrical terminals and rotating
components. Ensure that your footing is stable at all times.
