SPX Waukesha Cherry-Burrell Votator II, Руководство по эксплуатации и обслуживанию

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Maintenance Waukesha Cherry-Burrell
Page 52 95-03057 October 2005
Mechanical Seal Maintenance
The mechanical seals on the Votator II are the same on
both the non-driven and driven ends of the unit. The
O-rings and seal materials have been selected for the
product specifications. Various options are shown in the
Parts Lists starting on page 58.
Single Mechanical Seal
Units furnished before 2005 were installed with either a
single or double mechanical seal configuration. For
detailed parts drawing breakdown See “Single Mechanical
Seal” on page 64.
Seal Head Insert Removal and Installation
The Seal Head Insert located in the product head is
removed by tapping the back of the seal with a plastic
block or rod. Make sure to hold the insert or use a soft
cloth to catch it to prevent it from dropping when
removed.
NOTE:
To prevent damage to the seal face do not place
the seal face down on any surface during maintenance.
If the mechanical seal is going to be flushed, the springs in
the lip seal should be removed to protect the stub ends on
the mutator shaft. Install the seal in the relief position as
shown in Figure 48.
To install a new insert, lubricate the o-rings and the inside
bore. Insert in the head with an even distribution of force
on the face. The face must be protected with plastic to
avoid damage.
Seal Body Insert (Rotating Seal Face)
The rotating seal face is referred to as the Seal Body
Insert. This part is designed to wear at a greater frequency
than the seal head insert. An O-ring holds the insert
stationary in the seal body.
NOTE:
Do not use a lubricant on the Seal Body Insert
O-ring because the insert must remain stationary with
respect to the body. If necessary water can be used as a
lubricant.
The seal insert is symmetrical and can be reversed if one
side becomes scratched.
The seal body is held in place on the mutator shaft by two
seal drive pins. Each one should be 3/32 inches (+/-0.015)
above the stub shaft surface. It is extremely important that
these pins are not rounded on the edges and this dimension
is maintained. If the pins are higher than 3/32", the seal
will jam; if the pins are too low, the body will rotate. See
Figure 51.
Install the Seal Body Insert in the Seal Body as follows:
1. Place O-ring in Seal Body.
2. Push Seal Body Insert down evenly with both hands
until it bottoms out. See Figure 49.
Figure 47 - Seal Head Insert Removal
Figure 48 - Lip Seal Orientation
Figure 49 - Press Insert Down Evenly with Both Hands