hussmann P/N 0387183_D - Manual (Page 17)

Reach-In
CONTROL SETTINGS
MEDIUM TEMPERATURE
Parallel Compressor Rack
Measure Discharge Air Temperature
at the center of the case
at the discharge honeycomb.
Merchandiser temperature must be controlled by
a mechanical or electronic pressure regulator or
thermostat that will be mounted on the rack.
Standard Off Time defrost is temperature termi-
nated. The defrost frequency and lengths listed
may require adjustment for specific store condi-
tions. Factors include:
Store temperature and humidity
Low head pressure
Long refrigerant line runs
Seasonal changes
Merchandiser temperature lower than
recommended
Stagger defrosts to maintain stable compressor
loading and sufficient defrost gas. When practi-
cal, defrost when store is closed.
CONTROL SETTINGS
LOW TEMPERATURE
Parallel Compressor Rack
Measure Discharge Air Temperature
at the center of the case
at the discharge honeycomb.
Merchandiser temperature must be controlled by
a mechanical or electronic pressure regulator or
thermostat that will be mounted on the rack.
Standard Electric defrost is temperature terminat-
ed. Failsafe must not control defrost cycle length,
especially when less than 208V power supply is
used for defrost heaters, or if frost build up is
heavy from shopping demands.
Optional Gas defrost is time terminated and has
fan cycling thermostat. The defrost frequency and
lengths listed may require adjustment for specific
store conditions. Factors include:
Store temperature and humidity
Low head pressure
Long refrigerant line runs
Seasonal changes
Merchandiser temperature lower
than recommended
Stagger defrosts to maintain stable compressor
loading and sufficient defrost gas. When practi-
cal, defrost when store is closed.
P/N 0387183_D 2-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.