3. Moisten the groove of the spiral housing with a little isopropanol as an assembly aid for the o-ring.
4. Carefully insert the o-ring into the spiral housing.
9.5.3 Assembling the pump housing
Required tools
● Allen key,
WAF 5
● Calibrated torque wrench
Required consumables
● Laboratory gloves
● Isopropanol
1
2
3
4
5
6
7
8,9
11
10
Fig. 30:
Assembling the housing parts
1 Guide pin
7
Gas ballast valve
2 Exhaust connection without protective cap
8
Hexagon socket screw
3 Guide hole
9
Washer
4 Spiral housing
10
Connecting socket for air cooling
5 Fan cover
11
Pump housing
6 Fan cable
Assembling the spiral housing
1. Remove the protective cap from the exhaust connection.
2. Moisten the O-ring in the spiral housing with a little isopropanol as an assembly aid for the O-ring.
3. Fit the spiral housing with the guide hole exactly on the guide pin of the pump housing.
– Make sure that the tip seals remain in the grooves.
4. Screw the spiral housing with hexagon socket screws (5×) and washers firmly onto the pump
housing.
5. Tighten the screws evenly and crosswise in steps.
– Tightening torque:
5 Nm
Assembling the fan cover
1. Fix the fan cable in place in the groove provided on the fan cover.
2. Place the fan cover over the gas ballast valve and exhaust connection on the spiral housing, en-
suring that it is not tilted.
– Pay attention to the existing cabling and the distance pin within the fan cover.
3. Plug the fan cable into the connecting socket of the electronic drive unit.
Maintenance
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Summary of Contents for HISCROLL 12
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