© Copyright 2018 CGC Group Inc.
Installation Operation Maintenance Manual is Subject to Change without Notice- Last Revised June 2018
19
BULLDOG SideWinder – Installation, Operation, and Maintenance Manual
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, slide out the filter when the front panel is opened or removed.
CHECK FAN MOTORS ANNUALLY:
All BULLDOG Heat Pumps are permanently lubricated when shipped from the factory. Do not
oil fan motors.
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:
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 (delta 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 8-15
°
F (4.4-
8.3
°
C) in heating and 10-15
°
F (5.5-8.3
°
C) in cooling.
CAUTION: Any time an abnormal issue arises that results in a decision to disconnect power,
also shut off the water supply and return valves to isolate this heat pump from the building
water supply. Failure to shut off the water supply and return isolation valves may lead to product
and/or property damage.
