RS COMPACT FREEZE TUNNEL, Руководство по эксплуатации и обслуживанию

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OPERATION & MAINTENANCE MANUAL
CompactFreezer
30
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Always de‐energize the control panel before opening and working on any components inside.
Follow Lock Out / Tag Out (LOTO) procedures where applicable.
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Isolate the cryogen by closing the shutoff valve at the tank and the shutoff valve at the freezer
(HV‐100). Bleed any excess nitrogen trapped between the valves with a bleed valve. It is not
good practice to use the safety relief valve as a bleed valve.
•
Remember to replace all guards after performing maintenance.
9.1. PREVENTATIVE MAINTENANCE
REPLACE EVERY
Solenoid Valves 2‐3 years
Doors 5 years
Entrance / Exit Vestibules 5 Years
Door Plungers/Hinges 2 years
Module Joint Tape As necessary
Silicone As necessary
Curtains * As necessary
Safety Relief Valves 5 years
* Optional accessory, not included with all units
9.2. CONVEYOR AND CONVEYOR DRIVE
Conveyor Belt
Inspect the belt daily for the first several days of operations and semi ‐ monthly afterwards. A tensioning
device is in place for the conveyor belt of a single pass freezer. The slack in the bottom of conveyor belt
at the exit end is the required catenary to compensate for expansion and contraction and needs to take
‐
up.
The conveyor belt will wear in and stretch with use. Therefore, if this slack becomes excessive, it will be
necessary to shorten the conveyor belt by removing drive links and cross rods. Too much slack is readily
determined by the conveyor almost dragging on the floor of the ext end section when warm, and often
by a jerking or hesitation of the travel of the conveyor under power.
To remove slack in the conveyor belt:
a. Run the conveyor to locate a splice rod at a convenient location to work on the belt
b. Back‐off the nut on the splice rod and remove the rod.