Start Up - Scotsman NM952R Service Manual

NM952R

START UP

1. Remove the front, left, and right side service
panels.
2. Check that any styrofoam shipping blocks 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.
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 low pressure control will close and
the compressor will start.
5. The remote condenser fan turns, and the
condenser begins to discharge warm air.
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 correctly
according to the final check list on page 13.
Start Up
6. The unit should soon be making ice, if desired
the low side pressure may be checked, it should
be 25 psig + or - 2 psig. The discharge pressure
will depend upon air and water temperatures, but
should be between 200 psig and 280 psig.
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.
November 1992
Page 14