Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual download pdf (Page 41)

3)Allowthevacuumpumptopulldowntoa29.9"Hgvacuum.Evacuatingperioddepends

on pump capacity.

4) Close both gauge manifold valves.

5) Turn off the vacuum pump. Disconnect the vacuum pump hose and attach it to a

refrigerant service cylinder. Remember to loosen the connection, and purge the air

from the hose. See the nameplate for the required refrigerant charge. Hoshizaki

recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard

No. 700 (latest edition) be used.

6) A liquid charge is recommended for charging an R-404A system. Invert the service

cylinder and place it on scales.

7) Open the high-side gauge manifold valve and allow the system to charge with liquid

until the proper charge is met.

8) If necessary, add any remaining charge to the system through the compressor access

valve. Use a throttling valve or liquid dispensing device to add the remaining liquid

charge through the compressor access valve with the unit running.

9) Back out the receiver service valve stem all the way and tighten. Disconnect the gauge

manifold hoses.

Note: Be sure the receiver service valve stem is backseated all the way out and tight

before disconnecting the gauge manifold hose.

10) Cap the valves to prevent possible leaks.

Fig. 1

Rail Refrigerant Tubes

Rail Low-Side Service Valve

Rail High-Side Service Valve

Hex Head Bolt

Cabinet Liquid Line Valve

Cabinet Expansion Valve

Rail Expansion Valve

Rail High-Side

Access Valve

Rail Low-Side

Access Valve

Compressor

Access Valve

Rail Service Valve Bracket

Power Switch

Receiver Service Valve

Rail Cooling Switch

Wire Cover

Upper Attachment Nut

and Washer

Lower Attachment Nut

and Washer

Power Cord

Rail Liquid Line Valve

Compressor

Receiver Tank

Condenser

Drier

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Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual Page 41

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