Fristam Pumpen FDS 1 Series, Original Operating Manual Assembly Instructions

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/ / FDS TWIN SCREW PUMPS / / /
16
Fig. 13 Oil level and oil change
Procedure
1. Switch on the engine and let it run until the normal opera-
ting temperature is reached.
2. Switch off the motor and secure it against reactivation.
3. Place an appropriately sized oil pan below the locking screw
(13) .
4. Caution! Risk of burns from hot oil.
 Wear heat- and oil-resistant protective gloves.
Loosen the bleed screw (12) .
5. Loosen and remove the locking screw (13) .
6. Drain the oil completely and dispose of it in accordance with
local regulations.
7. Clean the bleed screw and seals.
8. Fit the locking screw and bleed screw with the appropriate
seals.
9. Add new oil, in so doing checking the oil level using the oil
level gauge (14) .
10.6 Lubricate motor bearings
 Lubricate the motor bearings in accordance with the gear
motor manufacturer’s specifications. Please refer to “Sup-
plier documentation” in the accompanying documents.
10.7 Replace shaft seal
Replace the shaft seal if:
– Pumped medium, barrier fluid or quench fluid is leaking out
of the pump on the atmospheric side,
– Barrier fluid or quenching fluid is leaking into the pumped
medium.
Procedure at a glance
1. Dismantle the pump housing,

see Chapter 10.8 “Dismantle pump head”, Page 16 .
2. Replace shaft seal,

see Chapter 10.9.2 “Installation of the shaft seal”, Page 17 .
 Pre-mount the pump housing.
 Install the shaft seal.
3. Mount the pump housing.
4. Mount the displacement device.
5. Close the pump cover.
The exact procedure is described in the following chapters.
10.8 Dismantle pump head
10.8.1 Dismantle pump housing and feed screws
Preparation
1. Before dismantling, refer to the enclosed “data sheet” to de-
termine which type of shaft seal the pump has.
2. Switch off the motor and secure it against reactivation.
3. Close valve in the pressure line.
4. Close the valve in the suction line.
5. Double shaft seal: Shut the barrier or quench fluid line.
6. Drain the pump completely.
7. Loosen the suction and pressure connections.
Procedure
Fig. 14 Dismantle the pump housing with cover and the feed screws
1. Loosen the screws (19) for the pump housing attachment.
2. Remove the pump housing (16) with cover (15) .
3. Warning: Rotating machine parts. Severe bruises inflicted
on hand.
 Block the feed screws (18) with an aluminium or plastic
wedge.
Screw off the feed screw attachment (17) with the asso-
ciated sealing rings (clockwise thread).
4. Remove the feed screws (18) from the drive shaft and the
driven shaft.
10.8.2 Dismantle the shaft seal
The pump may be supplied with a single or double–acting shaft
seal (see data sheet).
12 Bleed screw
13
Locking screw
14 Oil level gauge
12
14
13
17 15 18 16
19
20
21