Algas SDI ZIMMER, Operation & Maintenance Manual

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24
Servicing your ZIMMER
ZIMMER
vaporizers are designed to require very little maintenance.
The amount and frequency of maintenance depends on the quality
of the LPG. The main servicing points for the system are the drip
leg or heavy ends trap, vaporizer gas passages, the inlet strainer,
and the inlet valve screen.
Annual Maintenance Requirements:
Component Action Required
Inlet strainer Remove plug and clean the screen. Replace screen if gaps or
holes are present in the screen. If oils or contaminants are present,
it may be necessary to use a cleaning solution to remove them.
Inlet valve Check for accumulation of heavy ends. Remove the inlet valve,
allow heavy ends to drain. Alternatively blow out the oils through
the holes in the valve body.
Do not disassemble the valve!
Ensure thermal probe is sufficiently coated in thermal grease
and pushed all the way into the thermowell. Recommend
replacing the valve after 7 years in service.
Relief Valve Visually check and replace if leaks are observed. Check for
excessive corrosion and ensure the relief valve is covered with the
appropriate rain cap to prevent rain and debris from entering the
valve. Replace rain cap if damaged or missing. Relief valve
should be replaced per the manufacturers’ recommended
replacement schedule or if it relieves during normal operation.
Electronic wiring
and connections
Visually inspect all connections for corrosion, loose conductors,
heat build-up and/or charring. Tighten or replace if necessary.
Heat exchanger &
system drip legs
Check the system drip legs and vaporizer for heavy ends and oil
build-ups. If present, first ensure there are no sources of ignition
within 25 feet (8 meters), then drain heavy ends to a safe area . If
necessary, the heat exchanger gas passages can be cleaned by
removing end caps, plugs, and adapters. Use compressed air or a
non-metallic brush to clean gas passages. Visually inspect plug,
adapter and valve o-rings and
always perform a leak test
after re-
installing. When reinstalling plugs, torque to 44 ft-lbs (60 Nm).
After cleaning ensure that the gas passage inserts are installed
back in the same passages they were removed from!
NOTE: In areas where LPG quality is poor it may be necessary
for the drip legs and heat exchanger to be checked for heavy
ends more frequently (monthly or bi-monthly depending on
LPG quality) .
Mounting bracket Visually inspect mounting brackets for cracks or damage.
CAUTION – HOT!
When servicing the vaporizer, always make sure the vaporizer has
cooled prior to touching!