BULLDOG SpaceKeeper Vertical – Installation Operation Maintenance Manual
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© Copyright 2013 CGC Group Inc Installation Operation Maintenance Manual is Subject to Change without Notice- Last Revised Oct 1, 2014
MAINTENANCE
WARNING:
To prevent injury or death due to electrical shock or contact with moving parts, disable the unit
using the disconnect before servicing.
Inspect Filters:
Establish a regular maintenance schedule. Clean filters frequently and replace as required. A vacuum
can be used to clean filters as well as the surface of coil components.
To remove the filter from the unit lift the filter up and pull it out of the unit from the bottom.
Replace the old filter by sliding the top edge of a new filter up into the rack, then pushing in the
bottom of the filter until it drops into place. In some cases, filters can also be slid horizontally for
removal.
Check Fan motors annually:
All BULLDOG Heat Pumps are permanently lubricated when shipped from the factory. Do not oil fan
motors. Check belt tensions (if applicable), ensure the wheel spins freely and that the components
are free from dirt and debris.
Visual Inspection:
Visually inspect units and give special attention to hose assemblies. Note any signs of deterioration
or cracking, and repair leaks immediately.
Amperage Check on compressor and fan motor:
Check that all electrical connects are tight. Current draw on this equipment should not exceed normal
full load or rated load amps by more than 10 percent of the values noted on the unit nameplate.
Safety Control Reset:
All BULLDOG Heat Pumps include high and low pressure switches to prevent the machine from
operating under abnormal conditions of temperature or water flow. If multiple pressure alarms occur
in 24 hours, the compressor operation will be permanently locked out until the unit is reset, or power
is disconnected for 20 seconds.
NOTE: If the heat pump must be reset more than twice, check the unit for a dirty air filter, abnormal
entering water temperature, inadequate water flow (∆T method), or internal malfunctions that may
be causing high or low pressure conditions. If the unit continues to alarm, contact a trained service
technician and ensure the problems are resolved before continuing use of the unit.
∆T Method: The normal water temperature differential for a BULLDOG Heat Pump is 8-15⁰F (4.4-8.3⁰C)
in heating and 10-15⁰F (5.5-8.3⁰C) in cooling.
