Hoshizaki IM-240DSME Manual De Instalación página 5

ENGLISH
[c] INSTALLATION
) This Condenser Unit is provided with four mounting holes. Secure
the Condenser Unit with four bolts. See Fig. 2.
2) Remove the Flare Nut from each of the Access Valves on the
icemaker and Condenser Unit.
Note: Remove and discard the Copper Caps on the Flare Nuts.
3) The two copper tubes (9.52 mm OD) to be provided at site should
be insulated separately. Place the Flare Nuts onto each end of
the tubes and flare the tube ends.
Fig. 13
Note: The tube ends to be flared should be free from damage,
cracks and burrs and also clear of grease or scraps.
4) Connect the flared copper tubes on to the icemaker and
Condenser Unit. The two tubes have the same diameter so mark
them for a distinction between the gas line and the liquid line
to prevent misconnection. Apply some clean refrigerant oil of a
suitable type to the surfaces of the Flare before connection and
tightening. Support the Access Valve with a spanner on the flat
surfaces when tightening the nuts.
Tighten
Loosen
Copper Tube
Note: . Tighten the Flare Nuts to a torque of 38±4 Nm.
2. Check the distinction marks on both ends of each copper
tubing to make sure the connections are correct.
3. The tubes should not vibrate. Fix or secure the tubes to
prevent stressing.
5) Remove the Service Gauge Port Caps from the Access Valves
on the icemaker. Evacuate the lines through the Gauge Ports
for 20 minutes at max. 0. torr. Charge both lines with vapour
refrigerant R404A to a pressure of  bar. Add nitrogen to raise
the pressure to 5 bar. Thoroughly leak test the joints with a leak
detector or soap bubbles.
6) Evacuate the lines again at max. 0. torr. Vapour charge the
lines to  - 2 bar with refrigerant R404A. (The actual charge will
depend upon the length of tube run.)
Base charge up to 0m: 2400g
Additional charge for each additional meter: 40g
Fig. 12
Flare Nut
Copper Tube
Pipe Insulation
Fig. 14
Access Valve
As the total precharged refrigerant amount in the icemaker and
remote condenser is 2400g, the required refrigerant charge will
be:
40g x [length of tube run - 0] m
Example - If the length of tubing run is 5m (i.e. distance between
the icemaker and Condenser)
5m - 0m = 5m
Base charge = 2400g (up to 0m run)
Additional charge = 40g/m
Required refrigerant charge = 40g x 5m = 200g
On completion of the refrigerant charge, remove the charging
cylinder and charging lines. Refit the Port Caps and tighten to a
torque of 0± Nm.
7) Remove the Cap Nuts from the Access Valves on both the
Condenser and the icemaker. Open the liquid and gas line valves
by turning the Spindle with a hexagon wrench until fully open.
Cap Nut
Hexagon
Wrench (H4)
Copper Tube
Fig. 15
8) Refit the Cap Nuts to a torque of 25±3 Nm.
9) Check the Cap Nuts, Port Caps and flare joints for gas leaks with
a detector or soap bubbles.
0) Insulate the joints and seal them for water tightness.
Icemaker
Pipe Insulation
Junction Box
(Fan Motor
Leads inside)
Fig. 16
4
Open
Spindle
Close
Liquid Line
Power Cord
Pipe Insulation
Gas Line
Condenser Unit
Gas Line
Access Valve
Fan Motor
Liquid Line
Wiring Cord
Port
Port Cap
Fan Motor Leads
Access Valve