REFCO Two-Way Manifolds User Manual [en, de, fr]

Instructions of use

HVAC/R

Service Products

for REFCO 2-way manifolds:

Apex M2 SM2
BM2 MK-2 Star
Jumbo-Star

REFCO Manufacturing Ltd. Telefon [phone]

Industriestrasse 11 Telefax [phone]
CH-6285 Hitzkirch (Switzerland) [e-mail] www.refco.ch

HVAC/R

Service Products

Important

Read this manual and become familiar with the spe-

!

cifications and operation of REFCO manifolds prior to
use. The instructions of use will give you important
information in regards to the operation, service and the
disposal of the manifold.

Purpose and use:

The manifolds have been designed especially to measure pressure in
refrigeration equipment. The manifold may only be used by trained
technicians.

!

The manifold must not be used for other than refrigeration appli­cations in connection with refrigerants. The manifold is not suitable for
other liquids or gases than those indicated on the gauge.

!

The manifold must not be used with pressures higher than the pres-

sure scale indicated on the high pressure gauge of the manifold.

!

The manifold can in no case be used as a pressure regulator.

!

The manifold must not be used with ammonia (NH-3).

!

Safety goggles and gloves must be worn at all time during the use

of the manifold.

First use / Transport:

The manifolds are supplied from the factory either in a plastic carrying
case or cardboard box with, or without charging hoses.
Manifolds are high precision measuring instruments. After use, store
the manifold always in the carrying case or the cardboard box provid­ed. Plastic carrying cases can be purchased optionally. Please refer to
the manifold accessory section in the REFCO catalogue.

Technical description:

The 2-way manifold is a high precision instrument. Both gauges, high
and low pressure can be readjusted to the zero point. The manifold
gauges are marked with temperature and pressure scales or are
equipped with interchangeable refrigerant scales.

Changeable piston type valves ensure perfect sealing. Glycerine-oil
filled gauges are equipped with a safety pressure relief in case of a
pressure build up inside the gauge due to a defect. The hoses can be
hooked up to the hose anchors on the side and at the front of the t-style
for storage during non use. This protects the hoses against contami­nation or damage.

Delivery content:

The content of delivery for each manifold varies depending on the type.
Please refer to the REFCO catalogue for further information about exe­cutions and accessories.

REFCO Manufacturing Ltd. Telefon [phone]

Industriestrasse 11 Telefax [phone]
CH-6285 Hitzkirch (Switzerland) [e-mail] www.refco.ch

HVAC/R

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Use of manifold:

Preparing

Before use ensure that the temperature scales on the manifold gauges
match the refrigerants used in the system.
Adjust the gauge with the zero adjusting screw to zero. Position of the
hand may vary and might not point to zero depending on the atmos­pheric pressure. Readjusting the gauge might therefore be necessary
before each use of the manifold. The zero adjusting screw is positioned
either at the top or through the front lens depending on the type of
manifold.

Below the different types available:

BM2, STAR, JUMBO-STAR, SM2 ➞ lift plastic plug on lens
➞ screw on dial.

STAR, MK-2, M2 ➞ screw on top of gauge (outside –"12-o-clock")

After adjusting replace the lens or the plastic plug.

Connecting the manifold to a system

• Connect blue hose (4) ➞ compound side of system.

• Connect red hose (5) ➞ pressure side of system.

• Connect yellow hose (8) ➞ vacuum pump.

• Close both valves (6+7).

Evacuation of a system

• Turn on the vacuum pump

• Open both valves (6+7)

• Check pressure on compound gauge

• If vacuum reached close both valves (6+7)

Please note: The evacuation time may vary depending on the size of a
system. A minimal time span of 20 minutes must be observed to evac­uate a small to middle size system.

Filling of a system after evacuation

• Keep all valves closed. Disconnect the yellow hose from the vacuum
pump and connect this hose to a refrigerant container.

• Open blue valve (compound side)

• Open valve on refrigerant container. The system is now being filled
with refrigerant. Check the correct quantity of refrigerant with a charg­ing scale for example the REFCO REF-METER and observe the pressure
on the compound gauge. If the flow of refrigerant is too slow or insuf­ficient the compressor of the unit can be turned on to speed up the
process. Ensure that you fill vapour refrigerant only. Filling with full liq­uid may lead to damage of components of the system.

• If the correct filling quantity has been reached close all valves.

• After the filling process check the pressure on the pressure and com­pound side of the unit. You may use the flare cap provided.

REFCO Manufacturing Ltd. Telefon [phone]

Industriestrasse 11 Telefax [phone]
CH-6285 Hitzkirch (Switzerland) [e-mail] www.refco.ch

HVAC/R

Service Products

Finishing

• Disconnect all hoses from the system.

• Open valves (6+7)

Service of manifold

• The charging hoses must be checked and clean of oil residue before
each use. A visible control is also necessary to ensure that the hoses
and the connection are undamaged und tight.

• The seals and gaskets of the manifold are parts of use and must there­fore be replaced from time to time. The manifold is to be tested regu­larly to ensure the valves are still tight.

• If a manifold shows to be leaking the pistons of the valves can easily
be changed and are available as a spare part. Please refer to the mani­fold accessory section of the REFCO catalogue.

• If the sight glass is leaking a replacement kit is also available. To
change the sight glass a special tool is necessary (M4-6-11-T, Part No.

4493169) which is also available from REFCO. Replace and tighten the
new sight glass carefully in order to prevent damage of the glass.

• To change the valve core on models with t-style or vacuum gauge
connection, use a valve core screw driver A-32000 from REFCO.

• After change of spare parts of the manifold it is absolutely necessary
to test the manifold for tightness before the next use.

Further accessories and charging hoses for REFCO manifolds can be
found in the REFCO catalogue or on the web www.refco.ch.

Disposal of manifold

• Dispose of the manifold according to the rules and regulations of the
country of use.

Spare Parts for manifolds

Knob blue M2-6-09-B Part No 4490950
Knob red M2-6-09-R Part No 4490968

Complete valve set M2-10-95/10 Part No 9884818
Piston including gaskets M4-6-04/10 Part No 9884161
Sight glass set M4-6-11 Part No 4491018

Key for manifold
Sight glass M4-6-11-T Part No 4493169

Multi Case M4-6-15 Part No 4666106

REFCO Manufacturing Ltd. Telefon [phone]

Industriestrasse 11 Telefax [phone]
CH-6285 Hitzkirch (Switzerland) [e-mail] www.refco.ch

HVAC/R

Service Products

Index

1 compound gauge
2 pressure gauge
3 adjusting screw
4 compound connection
5 pressure connection
6 compound valve
7 pressure valve
8 vacuum connection
9 refrigerant connection

REFCO Manufacturing Ltd. Telefon [phone]

Industriestrasse 11 Telefax [phone]
CH-6285 Hitzkirch (Switzerland) [e-mail] www.refco.ch

HVAC/R

Service Products

Bedienungs- und Wartungsanleitung

für 2-Weg Monteurhilfen

Apex M2 SM2
BM2 MK-2 Star
Jumbo-Star

REFCO Manufacturing Ltd. Telefon [phone]

Industriestrasse 11 Telefax [phone]
CH-6285 Hitzkirch (Switzerland) [e-mail] www.refco.ch