Hoshizaki HR24A User Manual
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5) Disconnect the gauge manifold hose from the vacuum pump 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 the requirements of ARI
Standard 700 (latest edition) be used.
the hose. See the nameplate for the required refrigerant charge. Hoshizaki recommends
only virgin refrigerant or reclaimed refrigerant which meets the requirements of ARI
Standard 700 (latest edition) be used.
6) A liquid charge is recommended when charging an R-134a system. Place the service
cylinder on the scales; if the service cylinder is not equipped with a dip tube, invert the
service cylinder, then place it on the scales. Open the high-side valve on the gauge
manifold.
service cylinder, then place it on the scales. Open the high-side valve on the gauge
manifold.
7) Allow the system to charge with liquid until the proper charge weight is met.
8) Close the high-side valve on the gauge manifold, then close the refrigerant access valve
8) Close the high-side valve on the gauge manifold, then close the refrigerant access valve
(if applicable). Disconnect the gauge manifold hose.
9) Cap the access valve to prevent a possible leak.
B. Important Notes for Component Replacement
NOTICE
When replacing a component listed below, see the notes to help ensure proper
operation.
operation.
Component
Notes
Compressor
Install a new PTC relay.
WARNING! To reduce the risk of electric shock, be sure to
reconnect the component's ground wire.