9
Oil Traps –
P-Traps (oil traps) must be installed at the base of all suction line vertical risers.
Pressure Drop –
Pressure drop can rob the system of capacity. To keep the pressure drop to a
minimum, keep the refrigerant line run as short as possible using a minimum number of
elbows. Where elbows are required, use long radius elbows only.
Insulation –
The suction and liquid lines should be clamped or taped together and insulated for a
minimum of 30’ from the merchandiser. Additional insulation is recommende d wherever
condensation drippage is objectionable.
CONTROLS and ADJUSTMENTS –
The object of the controls and settings listed in this section is to maximize product
shelf life.
TEMPERATURE CONTROLS –
Discharge Air Temperature F
32
Evaporator Temperature F
20
Refrigerant Controls
Thermostat Cut-out F
32
Defrost Controls
Frequency (Qty per day)
4
Length of defrost (min)
30
ELECTRONIC CONTROLLERS –
On page 13 at the end of this booklet.
The control is factory set and should not need Field adjustment. If they do, use the
Quick Guide on the next page for reference.
SHELVING -
The MBC models come equipped with shelves. They are adjustable on one inch
increments. When loading the shelves with product, they should be loaded so that the
product does not extend over the front edge of the shelf. Product loaded over the edge will
interfere with air circulation in the cabinet. It is also desirable to leave a small space
between the rear interior wall and the product
on the shelves to allow air to enter the
cabinet interior through the perforations in the rear wall.
