PTR

Two units in the PTR should be regularly exchanged as part of the maintenance. This is the oil absorber in the compressor and a rotary valve. Both were ordered from Kelvin International/USA in May and arrived from Iwatani/Japan in August. We have exchanged the oil absorber, but the rotary valve model sent us was the wrong type. A correct type rotary valve arrived recently, but did this one did not work properly. An `sample' unit has been received from the manufacturer to act as spare until a replacement unit arrives. The old unit currently in use has now run more than the double the recommended hours.