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BULLDOG SpaceKeeper Vertical – Installation Operation Maintenance Manual
© Copyright 2013 CGC Group Inc Installation Operation Maintenance Manual is Subject to Change without Notice- Last Revised Oct 1,
2014
Air Balancing:
Air balancing of the system should be performed while the unit’s fan is operating at high-
speed. In order to ensure the fan is operating at high-speed, the unit must be placed into cool
mode.
SAFETY NOTE:
In the following part of the procedure it will be necessary to access the areas around the
electrical wiring and the circuit board. Do not adjust or remove any board connections or
wiring connections to other components without first powering down the unit. Disconnects are
usually within reach of the unit. Exercise caution at all times.
Verify Fan Rotation & Compressor Operation (3-Phase):
With the power OFF or open disconnect, inspect the fan section to ensure that it is clear of any
debris and that the fan rotates freely. Remove the front panel and the electrical panel cover.
Remove any thermostat block and turn power ON to the unit with the electrical disconnect.
Ensure that the correct standby protocol is in place - the following board lights will come on in
standby: Power, HP, LP, and Alarm.
Inspect the fan section to ensure that it is clear of any debris and that the fan rotates freely.
BULLDOG (008-060) SpaceKeeper Vertical units come equipped with a single-phase fan and
single phase compressors that are matched to each other as well as the other internal
components.
BULLDOG (024-060) SpaceKeeper Vertical units can be ordered with a single phase fan and a 3-
phase compressor.
BULLDOG (070-320) SpaceKeeper Vertical units come equipped with a 3-phase fan and
compressor that are matched to each other as well as the other internal components.
Although internal connections to the fan and compressor are made at the factory, variances in
power supply in the field will require that components be tested for correct operation. The
procedure is outlined below:
Single phase fan motors will always turn in the right direction and are not phase rotation
sensitive.
3 phase fan motors and compressors are matched at the factory. If the fan rotates
backwards, so too will the compressor. Jog fan contactor to verify rotation. If the rotation
is wrong, interchange two of the 3 wires at the power entering point.
