Manitowoc 2250 Service Maintenance Manual

Reference Only
Manitowoc Published 07-19-16, Control # 249-01 2-29
2250 SERVICE/MAINTENANCE MANUAL HYDRAULIC AND AIR SYSTEMS
2
Adjusting
See Figure 2-32 for the following procedure.
Turn the adjusting knob (7) counterclockwise to increase the
drip rate or clockwise to decrease the drip rate (1 to 3 drops
per minute is usually sufficient). Drip rate adjustments should
only be made under a steady flow condition. Once
established, the de-icer will automatically adjust the drip rate
proportionally to variations in the air flow. Push the green
lock ring down to lock the setting after the final adjustment.
To release, pull the lock ring up.
Maintenance
See Figure 2-33 for the following procedures.
Disassembly
1. Shut off the air supply pressure. The de-icer may be
disassembled without removal from the air line.
2. With a transparent reservoir, remove the side guard (15)
by rotating the guard around the body (13) to wind out
the retaining spring (14) through the cutout in the guard.
3. Slide the guard off the body.
4. Unscrew and remove the reservoir (9).
5. Remove the reservoir O-ring (3), fill plug (4), fill plug O-
ring (5), sight feed dome (7), O-rings (10 and 11),
seal (12), check (charge) valve (2) (if used), siphon
tube (6), and check ball (8).
6. Do not remove the flow sensor (1) unless it is obviously
damaged. If necessary, insert a needle-nose pliers into
the inlet port in the body (13) and grasp the point of the
flow sensor. Turn the sensor approximately 1/4 turn
either direction and push it through the body outlet port.
7. Clean the transparent reservoir using clear, warm water
only. Clean other parts using soap and water.
8. Dry the parts and blow out internal passages using
clean, dry compressed air.
Inspection
Inspect each part carefully. Replace any parts that are
damaged.
Reassembly
1. Reinstall the flow sensor (1), if removed, with the point in
the direction opposite to the flow arrow on the body (13).
2. Apply a wipe coat of 44M grease (or equivalent) to the
reservoir O-ring (3).
3. Tighten the sight feed dome (7) and charge valve (2), if
used, to 3,4 to 4,4 Nm (30 to 35 in-lb).
4. Tighten the siphon tube (6) until snug only.
5. Tighten the reservoir (9) by hand until the arrowhead on
the reservoir is in line with or to the right of the
arrowhead on the body.
6. Slide the side guard (15) onto the body and align the
retaining spring bead in the guard with the groove in the
body.
7. Insert the retaining spring (14) in the groove through the
cutout in the guard, and rotate the guard around the
body to “wind in” the spring.
Filling
Fill the reservoir with a high-quality desiccant to the level
indicated by the maximum fill line. Do not overfill the
reservoir.
S116
FIGURE 2-33
Item Description Item Description
1 Flow Sensor 9 Reservoir
2 Check (charge) Valve 10 O-ring
3 Reservoir O-ring 11 O-ring
4 Fill Plug 12 Seal
5 Fill Plug O-ring 13 Body
6 Siphon Tube 14 Retaining Spring
7 Sight Feed Dome 15 Side Guard
8 Check Ball
Install Remove
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English