Start Up - Scotsman NM1250R Service Manual

START UP

1. Remove the front, left, and right side
service panels.
2. Check that the styrofoam shipping blocks
under the gearmotor, on top of the ice
dischage chute, and between the gearmotor
and the right side panel have been removed.
3. Inspect the interior of the machine for loose
screws or wires. Check that no refrigerant
lines are rubbing each other. Check that the
fan blade turns freely (remote condenser).
1. Go through the pre-start inspection.
2. Open the hand valve, observe that water
enters the water reservoir, fills the tube from
the reservoir to the evaporator, and then shuts
off. Check for leaks.
3. Open the King Valve.
4. Turn the master switch on, and press the
start/reset switch.
The electrical start up sequence is now on
automatic.
A. There should be a short (15 second) delay
before the gearmotor starts.
B. After the gearmotor starts, the liquid line
valve will open, the pump down control will
close and the compressor will start.
5. The remote condenser fan turns, and the
condenser begins to discharge warm air.
6. The unit should soon be making ice, if
desired the low side pressure can be checked,
it should be 30 psig + or - 4 psig. The
Pre-Start Inspection
4. Check that the refrigerant lines are properly
installed.
5. Check that the electrical power has been
on for at least 12 hours and that the
compressor dome is warm.
6. Check that the unit is installed corerectly
according to the final check list on page 14.
Start Up
discharge pressure will depend upon air and
water temperatures, but should be between
200 psig and 280 psig.
Gearmotor amps should be about 1.2.
Compressor (single phase) amps should be
about 7.1
7. THERE ARE NO ADJUSTMENTS TO
MAKE, so replace the panels.
8. Clean and/or sanitize the storage bin
interior, wipe off the exterior with a clean,
damp cloth.
9 Give the owner/user the service manual,
instruct him/her in the operation of the unit,
and make sure they know who to call for
service.
10. Fill out the manufacturers registration
card, and mail it to the Scotsman Factory.
11. Fill out the field quality audit form, and mail
it to the Scotsman factory.
November, 1988
Page 15
NM1250R