Carrier 28QX - Manual (Page 29)

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*On 38WA/GL367 Models, remove sheet metal plate for access
to oil reservoir
Fig. 37 — Oiling Hole Location —
Plain Water Pump Package
*On 38WA/GL367 Models, remove sheet metal plate for access
to oil reservoir
Fig. 38 — Oiling Hole Location —
Glycol Pump Package
Start-Up and Annual Preventive Maintenance
Checklist
PUMP PACKAGE
1. Oil Bell and Gosset pump at start-up and
annually (Grundfos pumps are water lubricated
and do not need lubrication).
•
Two oilers on each end of motor (Fig. 37
and 38)
• 34WA/GL367 models have sheet metal plate
over oil reservoir; remove plate and add oil
until it comes out bleed hole on side.
34WA/GL267 models have oil tube over
reservoir; fill until oil comes out bleed hole
on side.
2. Inspect for leaks.
3. Make sure ball valves are open on ends of all
Grundfos pumps; screw head should be parallel
to piping.
4. Make sure adjustable aquastat is set properly
(no higher than 125 F).
5. Check glycol level on 34GL systems. It should
be visible in sightglass when operating, if not,
add glycol to bring level up to center of
sightglass.
6. Make sure Grundfos pumps are on high speed.
Switch should be set at #2.
7. Check insulation.
STORAGE TANK
1. Check inhibitor strength. Contact local water
treatment firm. Add inhibitor if necessary.
2. Check to see that insulation has not been
damaged.
3. Check for leaks.
4. Check water level in storage tank' visual
inspection.
5. Check for sediment in bottom of tank. Drain
should be located in supply line with supply
outlet at least 6-in. above bottom of tank.
Release water from drain; if this water has
sediment in it, drain tank completely and clean.
6. Make sure sensing bulbs are tight in wells and
that bulb wells are leak tight.
7. Make sure vent tube is clear and not damaged
or obstructed.
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