BOC Edwards 18B4B, Инструкция по эксплуатации, Страница: 43 / 62

Feb 04 Issue A
18B4B Vapour Booster Pumps
PAGE
37
37
MA
IN
TE
N
A
NC
E
5.5 Inspect the pump fluid (and drain if
necessary)
Notes: 1. If required, you can remove the cleaning port
cover (refer to Section 5.6.5) and inspect the
pump fluid without having to drain the pump.
If you do this, you must replace the gasket
when you refit the cover.
2. If your pump has a Pt100 temperature probe
fitted, the probe is integral to the fluid drain
plug and you must remove the probe in order
to drain the fluid from the pump.
If the pump fails to give satisfactory performance on
a leak tight system, inspect the condition of the
pump fluid as described below.
1. Allow the pump to cool and open it to
atmospheric pressure.
2. If the pump is cold, switch on the pump heaters
for a maximum of two minutes to warm the
pump fluid to aid draining. Do not vaporise the
pump fluid.
3. Refer to Figure 1. Place a suitable container
(with a capacity of at least 10 l) under the fluid
drain connection (29).
4. Loosen the 1 inch union nut on the fluid drain
connection (see Note 2 above) and allow the
fluid to drain from the pump.
5. Disconnect the pump from the electrical
supplies.
6. Disconnect the inlet (1) and outlet (16) from
your vacuum system.
7. Visually check the interior of the pump:
• If it is badly discoloured or coated with
charred fluid, the pump fluid has deteriorated
and must be changed; clean the pump as
described in Section 5.6.
• If the fluid is in a satisfactory condition, refill
the pump as described in Section 3.11 and
reconnect it to your vacuum system and to
the electrical supply.
5.6 Clean and inspect the pump
5.6.1 Introduction
When you clean the pump, choose the cleaning
solution to suit the type of pump fluid that has been
used.
Note that the jet assembly can be vapour de-greased
if required.
5.6.2 Dismantle the pump
Notes: 1. If your pump has a Pt100 temperature probe
fitted, the probe is integral to the fluid drain
plug and you must remove the probe in order
to drain the fluid from the pump.
2. If there is a significant amount of sediment in
the boiler, the drain port may become
blocked when you drain the fluid. If this
happens, push a suitable length of rod into
the drain port to clear the blockage.
1. Switch off the pump and isolate it from the
electrical supply
2. Allow the pump to cool and open it to
atmospheric pressure.
(Continued on page 38)
WARNING
Remove all traces of the cleaning
solution before you operate the
pump. If you do not, there may be a
risk of fire or explosion
WARNING
Use suitable lifting equipment to
move the pump or heavy
components/assemblies of the pump.
If you do not, you can injure yourself
or damage the pump. Refer to
Section 2.3 for the mass of the pump
and parts/assemblies of the pump.